[EN] PROCESS FOR PRODUCING PYRIDAZINONE COMPOUND AND PRODUCTION INTERMEDIATES THEREOF [FR] PROCÉDÉ DE PRODUCTION D'UN COMPOSÉ PYRIDAZINONE ET PRODUCTION DE SES INTERMÉDIAIRES
[EN] PROCESS FOR PRODUCING PYRIDAZINONE COMPOUND AND PRODUCTION INTERMEDIATES THEREOF [FR] PROCÉDÉ DE PRODUCTION D'UN COMPOSÉ PYRIDAZINONE ET PRODUCTION DE SES INTERMÉDIAIRES
Compounds of formula (I):
wherein R¹ is optionally substituted phenyl and R is a cycloalkyl group having an alkyl substituent in the 1-position; or R¹ is phenyl substituted by at least one fluorine atom and/or at least one trifluoromethyl group and R is hydrogen or an organic radical, and their salts and esters, are useful in the treatment of bacterial infections in humans and animals.
Practical and Broadly Applicable Catalytic Enantioselective Additions of Allyl-B(pin) Compounds to Ketones and α-Ketoesters
作者:Daniel W. Robbins、KyungA Lee、Daniel L. Silverio、Alexey Volkov、Sebastian Torker、Amir H. Hoveyda
DOI:10.1002/anie.201603894
日期:2016.8.8
catalytic additions of easy‐to‐handle allyl‐B(pin) (pin=pinacolato) compounds to ketones and acyclic α‐ketoesters was developed. Accordingly, a large array of tertiary alcohols can be obtained in 60 to >98 % yield and up to 99:1 enantiomeric ratio. At the heart of this development is rational alteration of the structures of the small‐molecule aminophenol‐based catalysts. Notably, with ketones, increasing
PROCESS FOR PRODUCING PYRIDAZINONE COMPOUND AND PRODUCTION INTERMEDIATES THEREOF
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:US20150376138A1
公开(公告)日:2015-12-31
The present invention provides a process for producing a compound of the formula (1) wherein X represents a hydrogen atom, etc., and Y represents a hydrogen atom, etc., which comprises step 1 of reacting a compound of the formula (2) and a compound of the formula (3) in the presence of a Lewis acid wherein R represents a hydrogen atom, etc., to obtain an adduct, and step 2 of reacting the adduct obtained in the step 1 and hydrazine to obtain the compound of the formula (1).