Polymer-mounted N3P(MeNCH2CH2)3N: a green, efficient and recyclable catalyst for room-temperature transesterifications and amidations of unactivated esters
作者:Venkat Reddy Chintareddy、Hung-An Ho、Aaron D. Sadow、John G. Verkade
DOI:10.1016/j.tetlet.2011.09.102
日期:2011.12
Merrifield resin-supported N3P(MeNCH2CH2)3N shows excellent activity in the transesterification of higher esters such as glyceryl tribenzoate to methyl esters. The catalyst was successfully cycled 20 times (albeit with an increase in reaction time) without compromising yield up to the 20th cycle. The catalyst also showed good performance in amidation reactions of unactivated esters with amino alcohols
PROCESS FOR THE PREPARATION OF VALSARTAN AND INTERMEDIATE PRODUCTS
申请人:Stohandl Jiri
公开号:US20100217008A1
公开(公告)日:2010-08-26
The present invention relates to a new method for the production of valsartan, a valine derivative having the chemical N name is (S)—N-(1-carboxy-2-methylprop-1-yl)-N-pentanoyl-N-[2′-(1H-tetrazol-5-yl)-biphenyl-4-ylmethyl]amine, and pharmacologically acceptable salts thereof. Furthermore the invention relates to new intermediate compounds which are suitable for the production of valsartan and new methods for the production of intermediate compounds which are suitable for the production of valsartan.
[EN] PROCESS FOR THE PREPARATION OF VALSARTAN AND INTERMEDIATE PRODUCTS<br/>[FR] PROCÉDÉ DESTINÉ À LA PRÉPARATION DE VALSARTAN ET PRODUITS INTERMÉDIAIRES
申请人:RATIOPHARM GMBH
公开号:WO2008071400A1
公开(公告)日:2008-06-19
[EN] The present invention relates to a new method for the production of valsartan, a valine derivative having the chemical name is (S)-N-(1 -carboxy-2-methylprop-1 -yl)-N-pentanoyl-N- [2'-(1 H-tetrazol-5-yl)-biphenyl-4-ylmethyl]amine, and pharmacologically acceptable salts thereof. Furthermore the invention relates to new intermediate compounds which are suitable for the production of valsartan and new methods for the production of intermediate compounds which are suitable for the production of valsartan. [FR] La présente invention concerne un nouveau procédé destiné à la production de valsartan, un dérivé de valine dont le nom chimique est (S)-N-(1 -carboxy-2-méthylprop-1-yl)-N-pentanoyl-N- [2'-(1 H-tétrazol-5-yl)-biphényl-4-ylméthyl]amine, et des sels pharmaceutiquement acceptables de celui-ci. En outre, l'invention concerne de nouveaux composés intermédiaires qui sont appropriés à la production de valsartan et de nouveaux procédés destinés à la production de composés intermédiaires qui sont appropriés à la production de valsartan.