Ethyl-4,4,4-trifluoroacetoacetate (ETFAA), a powerful building block for enantiopure chirons in trifluoromethyl-β-amino acid series
摘要:
Herein are studied new transformations of ethyl -4,4,4-trifluoroacetoacetate (ETFAA), giving access to a series of enantiopure chirons bearing both a trifluoromethyl group and an amino moiety. The key intermediate is obtained optically pure by a resolution procedure.(c) 2007 Elsevier B.V. All rights reserved.
Pyrazolo[1,5-Alpha]Pyrimidinyl Derivatives Useful as Corticotropin-Releasing Factor (Crf) Receptor Antagonists
申请人:Lanier Marion
公开号:US20080194589A1
公开(公告)日:2008-08-14
CRF receptor antagonists are disclosed which may have utility in the treatment of a variety of disorders, including the treatment of disorders manifesting hypersecretion of CRF in mammals. The CRF receptor antagonists of this invention have the following structure: (I);
and pharmaceutically acceptable salts, esters, solvates, stereoisomers and prodrugs thereof, wherein R
1
, R
2a
, R
2b
, Y, Het, n, o, R
6
, Ar and R
7
are as defined herein. Compositions containing a CRF receptor antagonist in combination with a pharmaceutically acceptable carrier are also disclosed, as well as methods for use of the same.
ORGANOACTINIDE-, ORGANOLANTHANIDE-, AND ORGANOGROUP-4-MEDIATED HYDROTHIOLATION OF TERMINAL ALKYNES WITH ALIPHATIC, AROMATIC AND BENZYLIC THIOLS
申请人:Marks Tobin J.
公开号:US20140142319A1
公开(公告)日:2014-05-22
An efficient and highly Markovnikov selective organoactinide-, organolanthanide-, and organozirconium-catalyzed addition of aryl, benzyl, and aliphatic thiols to terminal alkynes is described. The corresponding vinyl sulfides are produced with little or no side-products.
US7879862B2
申请人:——
公开号:US7879862B2
公开(公告)日:2011-02-01
Trifluoroacetaldehyde: A useful industrial bulk material for the synthesis of trifluoromethylated amino compounds
The synthesis of various trifluoromethylated amino compounds was studied using trifluoroacetaldehyde, an industrial bulk material, as a starting compound. One general application of trifluoroacetaldehyde is the preparation of trifluoroethylamino derivatives via reductive amination reaction. This synthesis includes the formation of the corresponding N,O-acetal intermediates followed by their reduction