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1. US20190040049 - Method for producing benzoxazole compound

Office United States of America
Application Number 16076353
Application Date 06.12.2016
Publication Number 20190040049
Publication Date 07.02.2019
Grant Number 10246445
Grant Date 02.04.2019
Publication Kind B2
IPC
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
D
HETEROCYCLIC COMPOUNDS
413
Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
02
containing two hetero rings
04
directly linked by a ring-member-to-ring- member bond
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
D
HETEROCYCLIC COMPOUNDS
213
Heterocyclic 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
02
having three double bonds between ring members or between ring members and non-ring members
04
having 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
60
with 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
78
Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
81
Amides; Imides
C07D 413/04
C07D 213/81
CPC
C07D 213/81
C07D 413/04
Applicants Sumitomo Chemical Company, Limited
Inventors Koji Hagiya
Agents Panitch Schwarze Belisario & Nadel LLP
Priority Data 2016-024460 12.02.2016 JP
Title
(EN) Method for producing benzoxazole compound
Abstract
(EN)

A method is provided for producing a compound represented by formula (3), wherein n is 1, 2, 3 or 4, by mixing a compound represented by formula (2), a tri(C1-C3 alkyl)silyl(C1-C4 perfluoroalkane) and a fluoride. A method for producing the compound represented by formula (3) contains a step for producing the compound represented by formula (2) by an intramolecular dehydration condensation of a compound represented by formula (1) and by a step for mixing the compound represented by formula (2), a tri(C1-C3 alkyl)silyl(C1-C4 perfluoroalkane) and a fluoride.

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