A compound of the formula
and intermediates useful in preparing same.
一种化合物的公式及其制备过程中有用的中间体。
QUINUCLIDINE DERIVATIVES BINDING TO MUCARINIC M3 RECEPTORS
申请人:Collingwood Stephen Paul
公开号:US20100041887A1
公开(公告)日:2010-02-18
Compounds of formula I
in salt or zwitterionic form wherein, wherein R
1
, R
2
, R
3
, and R
4
have the meanings as indicated in the specification, are useful for treating conditions that are mediated by the muscarinic M3 receptor. Pharmaceutical compositions that contain the compounds and a process for preparing the compounds are also described.
Quinuclidine derivatives binding to mucarinic m3 receptors
申请人:Collingwood Paul Stephen
公开号:US20070060563A1
公开(公告)日:2007-03-15
Compounds of formula I
in salt or zwitterionic form wherein, wherein R
1
, R
2
, R
3
, and R
4
have the meanings as indicated in the specification, are useful for treating conditions that are mediated by the muscarinic M3 receptor. Pharmaceutical compositions that contain the compounds and a process for preparing the compounds are also described.
Tf<sub>2</sub>O- and Cu(OTf)<sub>2</sub>-Assisted Acylamination Reaction of Unactivated Alcohols with Nitriles: A One-Pot P(IV) Activation, Stereoretention in Cycloalkanols and Deprotection Approach
作者:Mohammad Yaqoob Bhat、Sajjad Ahmed、Qazi Naveed Ahmed
DOI:10.1021/acs.joc.2c01251
日期:2022.9.2
Described herein is a simple, novel, one-pot acylamination reaction of unactivated alcohols. This reaction employs the combination of PCl3 and triflic anhydride (Tf2O) or copper triflate Cu(OTf)2, which serves as a source of P(IV)-activated complex for nitriles to react under the Ritter-type mechanism. The synthetic utility of Tf2O-promoted reactions was demonstrated by its effectiveness to generate different
Amides are an important class of compounds in pharmaceutical and agrochemical chemistry. Herein, we report a novel procedure for the synthesis of amides via PhI(OAc)2-mediated C–N bond cleavage of acylhydrazines with amines under metal free conditions. The protocol shows broad substrate scope, high yields, and simple and mild operation.