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1. (WO2012103041) PROCESS FOR THE PREPARATION OF 4-AMINO-3-CHLORO-5-FLUORO-6-(SUBSTITUTED) PICOLINATES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2012/103041    International Application No.:    PCT/US2012/022285
Publication Date: 02.08.2012 International Filing Date: 24.01.2012
IPC:
A01N 43/40 (2006.01)
Applicants: DOW AGROSCIENCES LLC [US/US]; 9330 Zionsville Road Indianapolis, IN 46268 (US) (For All Designated States Except US).
ARNDT, Kim E. [US/US]; (US) (For US Only).
RENGA, James M. [US/US]; (US) (For US Only).
ZHU, Yuanming [US/US]; (US) (For US Only).
WHITEKER, Gregory T. [US/US]; (US) (For US Only).
LOWE, Christian T. [US/US]; (US) (For US Only)
Inventors: ARNDT, Kim E.; (US).
RENGA, James M.; (US).
ZHU, Yuanming; (US).
WHITEKER, Gregory T.; (US).
LOWE, Christian T.; (US)
Agent: MIXAN, Craig; Dow AgroSciences LLC 9330 Zionsville Road Indianapolis, Indiana 46268 (US)
Priority Data:
61/435,966 25.01.2011 US
Title (EN) PROCESS FOR THE PREPARATION OF 4-AMINO-3-CHLORO-5-FLUORO-6-(SUBSTITUTED) PICOLINATES
(FR) PROCÉDÉ DE PRÉPARATION DE 4-AMINO-3-CHLORO-5-FLUORO-6-PICOLINATES (SUBSTITUÉS)
Abstract: front page image
(EN)4-Amino-3-chloro-5-fluoro-6-(substituted) picolinates are conveniently prepared from 3,4;5,6-tetrachloropicolinonitrile by a series of steps involving fluorine exchange, amination, halogen exchange and hydrolysis, esterification and transition metal assisted coupling. The present invention concerns a process for the preparation of 4-amino-3-chloro-5-fluoro-6-(substituted)picolinates. More particularly, the present invention concerns a process for the preparation of 4-amino-3-chloro-5-fluoro-6-(substituted)picolinates in which the 5-fluoro substituent is introduced by a halogen exchange early in the process scheme.
(FR)La présente invention concerne la préparation de 4-amino-3-chloro-5-fluoro-6-picolinates (substitué) à partir de 3,4,5,6-tétrachloropicolinonitrile par une série d'étapes impliquant un échange de fluor, une amination, un échange d'halogène et une hydrolyse, une estérification et un couplage assisté par des métaux de transition.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)