Diastereoselective Synthesis of Homoallylic Alcohols with Adjacent Tertiary and Quaternary Centers by Using Functionalized Allylic Aluminum Reagents
作者:Zhihua Peng、Tobias D. Blümke、Peter Mayer、Paul Knochel
DOI:10.1002/anie.201003813
日期:2010.11.2
Sensitive functional groups, including ester and cyano groups, can be present in allylicaluminumreagents prepared by aluminum insertion in the presence of InCl3. These aluminum organometallic compounds undergo addition reactions to various functionalized aldehydes or ketones with remarkable diastereoselectivities allowing the construction of two adjacentquaternary and tertiarycenters (see scheme)
Electroreductive Cobalt‐Catalyzed Carboxylation: Cross‐Electrophile Electrocoupling with Atmospheric CO
<sub>2</sub>
作者:Nate W. J. Ang、João C. A. Oliveira、Lutz Ackermann
DOI:10.1002/anie.202003218
日期:2020.7.27
nontoxic C1 synthon is of utmost topical interest in the context of carbon capture and utilization (CCU). We present the merger of cobalt catalysis and electrochemical synthesis for mild catalytic carboxylations of allylic chlorides with CO2. Styrylacetic acid derivatives were obtained with moderate to good yields and good functional group tolerance. The thus‐obtained products are useful as versatile synthons
Enantioselective domino reaction of CO2, amines and allyl chlorides under iridium catalysis: formation of allyl carbamates
作者:Min Zhang、Xiaoming Zhao、Shengcai Zheng
DOI:10.1039/c4cc00413b
日期:——
The enantioselective domino reaction between CO2 (1 atm), amines and linear allyl chlorides in the presence of an iridium complex, DABCO and toluene at 15 degrees C was realized, which gave branchedallylcarbamates in acceptable to high yields with up to excellent regioselectivity (99/1) and 94% ee. This is the first example of the synthesis of chiral allylcarbamates through catalytic domino reactions
4,5,7,8-tetrahydro-6H-thiazolo[5,4-d]azepines, their preparation and
申请人:Karl Thomae GmbH
公开号:US05068325A1
公开(公告)日:1991-11-26
The present invention relates to new 4,5,7,8-tetrahydro-6H-thiazolo[5,4-d]azepines of general formula II ##STR1## wherein the substituents are defined herein below, which compounds have valuable pharmacological properties, namely selective effects on the dopaminergic system which are achieved by stimulating (predominantly D2) dopamine receptors.