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1. WO2004002988 - IMPROVED METHOD OF MAKING NEVIRAPINE

Publication Number WO/2004/002988
Publication Date 08.01.2004
International Application No. PCT/US2003/017376
International Filing Date 02.06.2003
Chapter 2 Demand Filed 20.11.2003
IPC
C07D 213/78 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
213Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
02having three double bonds between ring members or between ring members and non-ring members
04having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
60with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
78Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
C07D 213/80 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
213Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
02having three double bonds between ring members or between ring members and non-ring members
04having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
60with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
78Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
79Acids; Esters
80in position 3
C07D 213/82 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
213Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
02having three double bonds between ring members or between ring members and non-ring members
04having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
60with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
78Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
81Amides; Imides
82in position 3
C07D 213/85 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
213Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
02having three double bonds between ring members or between ring members and non-ring members
04having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
60with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
78Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
84Nitriles
85in position 3
C07D 471/14 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
471Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/-C07D463/251
12in which the condensed system contains three hetero rings
14Ortho-condensed systems
CPC
A61P 31/18
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
31Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
12Antivirals
14for RNA viruses
18for HIV
C07D 213/78
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
213Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
02having three double bonds between ring members or between ring members and non-ring members
04having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
60with heteroatoms or with carbon atoms having three bonds to hetero atoms, with at the most one to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
78Carbon atoms having three bonds to hetero atoms, with at the most one to halogen, e.g. ester or nitrile radicals
C07D 213/80
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
213Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
02having three double bonds between ring members or between ring members and non-ring members
04having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
60with heteroatoms or with carbon atoms having three bonds to hetero atoms, with at the most one to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
78Carbon atoms having three bonds to hetero atoms, with at the most one to halogen, e.g. ester or nitrile radicals
79Acids; Esters
80in position 3
C07D 213/82
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
213Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
02having three double bonds between ring members or between ring members and non-ring members
04having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
60with heteroatoms or with carbon atoms having three bonds to hetero atoms, with at the most one to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
78Carbon atoms having three bonds to hetero atoms, with at the most one to halogen, e.g. ester or nitrile radicals
81Amides; Imides
82in position 3
C07D 213/85
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
213Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
02having three double bonds between ring members or between ring members and non-ring members
04having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
60with heteroatoms or with carbon atoms having three bonds to hetero atoms, with at the most one to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
78Carbon atoms having three bonds to hetero atoms, with at the most one to halogen, e.g. ester or nitrile radicals
84Nitriles
85in position 3
C07D 471/14
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
471Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
12in which the condensed system contains three hetero rings
14Ortho-condensed systems
Applicants
  • BOEHRINGER INGELHEIM CHEMICALS, INC. [US]/[US]
Inventors
  • BOSWELL, Robert, F., Jr.
  • GUPTON, Bernard, Franklin
  • LO, Young, S.
Agents
  • RAYMOND, Robert, P.
Priority Data
60/392,69028.06.2002US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) IMPROVED METHOD OF MAKING NEVIRAPINE
(FR) PROCEDE DE PREPARATION DE LA NEVIRAPINE AMELIORE
Abstract
(EN)
A process for making nevirapine, comprising the following steps: (a) reacting a 2-halo-3-pyridinecarbonitrile of the formula (I), wherein X is a fluorine, chlorine, bromine or iodine atom, preferably chlorine or bromine, with cyclopropylamine, to yield 2-(cyclopropylamino)-3-pyridinecarbonitrile; (b) hydrolyzing the 2-(cyclopropylamino)-3-pyridinecarbonitrile to yield 2-(cyclopropylamino)-3-pyridine carboxylic acid; (c) isolating the 2-(cyclopropylamino)-3-pyridine carboxylic acid from the reaction medium; (e) treating the 2-(cyclopropylamino)-3-pyridine carboxylic acid with a chlorinating agent, to yield 2-(cyclopropylamino)-3-pyridinecarbonyl chloride; (f) reacting the 2-(cyclopropylamino)-3-pyridine carbonyl chloride with a 2-halo-4-methyl-3-pyridinamine of the formula (I), wherein X is a fluorine, chlorine, bromine or iodine atom, preferably chlorine or bromine, to produe an N-(2-halo-4-methyl-3-pyridinyl)-2-(cyclopropylamino)-3-pyridinecarboxamide; and (g) cyclizing the N-(2-halo-4-methyl-3-pyridinyl)-2-(cyclopropylamino)-3-pyridinecarboxamide by treatment with a strong base, to yield nevirapine.
(FR)
L'invention concerne un procédé de préparation de la névirapine consistant: a) faire réagir un 2-halo-3-pyridinecarbonitrile représenté par la formule (I) dans laquelle X représente un atome de fluor, de chlore, de brome ou d'iode, de préférence, de chlore ou de brome avec un cyclopropylamine afin de produire un 2-(cyclopropylamino)-3-pyridinecarbonitrile; b) à hydrolyser le 2-(cyclopropylamino)-3-pyridinecarbonitrile afin de produire un acide 2-(cyclopropylamino)-3-pyridine carboxylique; c) à isoler l'acide 2-(cyclopropylamino)-3-pyridine carboxylique du milieu de réaction; e) à traiter l'acide 2-(cyclopropylamino)-3-pyridine carboxylique à l'aide d'un agent de chloration afin de produire un chlorure 2-(cyclopropylamino)-3- pyridinecarbonyl; f) à faire réagir le chlorure 2-(cyclopropylamino)-3-pyridinecarbonyl avec un 2-halo-4-methyl-3-pyridinamine représenté par la formule (I), dans laquelle X représente un atome de fluor, de chlore, de brome ou d'iode, de préférence, de chlore ou de brome afin de produire un N-(2-halo-4-methyl-3-pyridinyl)-2-(cyclopropylamino)-3-pyridinecarboxamide; et g) à cycliser le N-(2-halo-4-methyl-3-pyridinyl)-2-(cyclopropylamino)-3-pyridinecarboxamide par traitement à l'aide d'une base forte afin d'obtenir la névirapine.
Also published as
CO05007450
HRP20041214A
NO20044332
PH1-2004-502063
PH12004502063
UZ20050027
YUP-1102/04
ZA200407107
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