New electrochemical carboxylation of vinyl triflates. Synthesis of β-keto carboxylic acids
摘要:
Electrochemical reduction of alicyclic vinyl triflates (1a-1e) in a DMF solution containing 0.1 M Bu4NBF4 under an atmospheric pressure of carbon dioxide with a platinum cathode and a magnesium anode resulted in the cleavage of an oxygen-sulfur bond of 1 to give the corresponding beta-keto carboxylic acids (2a-2e) in yields of 28-77%. (C) 1998 Elsevier Science Ltd. All rights reserved.
Manganese(III)-Catalyzed Formal [3+2] Annulation of Vinyl Azides and β-Keto Acids for Synthesis of Pyrroles
作者:Shunsuke Chiba、Eileen Ng、Yi-Feng Wang
DOI:10.1055/s-0030-1259920
日期:2011.4
Manganese(III)-catalyzed formal [3+2] annnulation of vinylazides and β-keto acids has been developed for the synthesis of substituted NH pyrroles with a wide range of substituents.
Synthesis of Tetrasubstituted Furans by Palladium-Catalyzed Decarboxylative [3+2] Cyclization of Propargyl β-Keto Esters
作者:Masahiro Yoshida、Shoko Ohno、Kozo Shishido
DOI:10.1002/chem.201103246
日期:2012.2.6
The decarboxylative [3+2] cyclization reaction of propargyl β‐ketoesters with a palladium catalyst is described. Tetrasubstituted furans with a variety of substituents were conveniently synthesized with high efficiency (see scheme).
4-HYDROXY-BENZOPYRAN-2-ONES AND 4-HYDROXY-CYCLOALKYL B]PYRAN-2-ONES USEFUL TO TREAT RETROVIRAL INFECTIONS
申请人:THE UPJOHN COMPANY
公开号:EP0682663A1
公开(公告)日:1995-11-22
METHOD FOR ASSEMBLING HIGH-PURITY CHEMICAL LIBRARIES, COMPOUNDS SUPPRESSING ACETYL COENZYME A CARBOXYLASE ACTIVITIES DISCOVERED BY SAME
申请人:Kozmin Sergey A.
公开号:US20100035892A1
公开(公告)日:2010-02-11
The present disclosure provides novel compounds of the formula (I):
wherein R
0
, R
1
, R
2
, R
3
, R
4
, R
5
, and R
6
are as defined in the detailed description. Two preferred compounds of formulae (IX) and (X) are disclosed.