专利号:US-10294196-B2 优先权日:2015-11-18 标题:Process for the synthesis of intermediates useful for preparing 1,3,4-triazine derivatives 发明人:XU SHENG; XU YIHUI 权利人:FMC CORP 摘要:A process for the synthesis of 1,3-diethyl 2-(2-methylhydrazinylidene)propanedioate comprising the step of: reacting 2-halosubstituted diethyl malonate or mixtures of 2-halo-substituted diethyl malonates with methylhydrazine or the salt thereof in the presence of an acid catalyst is disclosed. 1,3-diethyl 2-(2-methylhydrazinylidene)propanedioate is an intermediate useful for preparing 1,3,4-triazines.
专利号:US-5981748-A 优先权日:1995-06-07 标题:Synthesis of optically pure compounds useful as GARFT inhibitors and their intermediates 发明人:VARNEY MICHAEL D; ROMINES WILLIAM H; PALMER CYNTHIA L 权利人:AGOURON PHARMA 摘要:The invention relates to methods of making compounds of the formula VII ##STR1## and their enantiomers, where Ar is a substituted or unsubstituted five- or six-membered aromatic group and B is either an amino acid linked through the amino portion to form an amide or a C 1 -C 6 alcohol linked through the alcohol portion to form an ester. These compounds are advantageously employed as intermediates to prepare optically pure compounds that are active GARFT inhibitors. In one method, a compound of the formula ##STR2## is reacted with a compound of the formula ##STR3## where X is a halogen.
专利号:US-6153705-A 优先权日:1997-06-23 标题 :Method for block polymer synthesis by controlled radical polymerisation 发明人:CORPART PASCALE; CHARMOT DOMINIQUE; ZARD SAMIR Z; BIADATTI THIBAUD; MICHELET DANIEL 权利人:RHODIA CHIMIE SA 摘要:PCT No. PCT/FR98/01316 Sec. 371 Date Jan. 14, 1999 Sec. 102(e) Date Jan. 14, 1999 PCT Filed Jun. 23, 1998 PCT Pub. No. WO98/58974 PCT Pub. Date Dec. 30, 1998The invention relates to a process for polymerizing block polymers of general formula (I): in which process the following are brought into contact with each other: an ethylenically unsaturated monomer of formula: CYY'(=CW-CW')a=CH2, a precursor compoun of general formula (II): a radical polymerization initiator.
专利号:US-2018334427-A1 优先权日:2015-11-18 标 题 :Process for the Synthesis of Intermediates Useful for Preparing 1,3,4-Triazine Derivatives
专利号:US-6545098-B1 优先权日:1997-12-31 标 题:Synthesis method for block polymers by controlled radical polymerization from dithioester compounds 发明人:BOUHADIR GHENWA; CHARMOT DOMINIQUE; CORPART PASCALE; ZARD SAMIR 权利人:RHODIA CHIMIE SA 摘要:The invention concerns a method for preparing, by radical polymerisation, block polymers of general formula (1), which consists in contacting: an ethylenically unsaturated monomer of formula CYY'(=CW-CW')a=CH2: and a precursor compound of general formula (II): a radical polymerization initiator.
专利号:ES-2206580-T3 优先权日:1995-06-07 标题 :SYNTHESIS OF OPTICALLY PURE COMPOUNDS USEFUL AS INJERTS OF INJERTO AND ITS INTERMEDIARIES.