The reactions of metastable [C5 H10 O]+˙ ions with the oxygen on the second carbon
摘要:
AbstractNearly all [C5H10O]+˙ isomers with the oxygen on the second carbon are shown to interconvert with each other and lose methyl and ethylene at the threshold for dissociation. The methyls contain the carbons from the 1‐ and 5‐positions with about equal frequency, and C(3) or perhaps C(4) about half as often as either terminal carbon. CH3 CH2 CH2 CO+ is formed by loss of the C(1) methyl and magnified image by loss of the C(5) methyl. Hydorgen transfer between C(5) and the oxygen and between the oxygen and C(4) are facile, and 1,2‐hydrogen transfers between C(3) and C(4) occur with high frequency. Extensive skeletal rearrangements also take placae by 1,2‐shifts between C(2), C(3) and C(4). We attribute the occurrence of teh three‐center shifts between C(2), C(3) and C(4) to the presence of considerable charge density on C(2) and C(3) in many of the [C5H10O]+˙ isomers. The isomerizations of [C5H10O]+˙ can be considered a mixture of free radical and carbocation reactions. Strong similarities exist between the isomerizations of metastable [C5H10O]+˙ ions with the oxygen on the second carbon and those of isomers of ionized butanoic acid, methyl butanoate and n‐butanal.
(2R,5R)-(-)-2,5-Dimethylcyclopentanone and (5S)-(+)-2,5-dimethyl-2-cyclopenten-1-one by microbiological reduction of racemic 2,5-dimethyl-2-cyclopenten-1-one
Aminochromane, aminothiochromane and amino-1,2,3,4-tetrahydroquinoline derivatives, pharmaceutical compositions containing them, and their use in therapy
申请人:AbbVie Deutschland GmbH & Co. KG
公开号:US20150111867A1
公开(公告)日:2015-04-23
The present invention relates to aminochromane, aminothiochromane and amino-1,2,3,4-tetrahydroquinoline derivatives of the formula (I)
or a physiologically tolerated salt thereof
The invention relates to pharmaceutical compositions comprising such aminochromane, aminothiochromane and amino-1,2,3,4-tetrahydroquinoline derivatives, and the use of such aminochromane, aminothiochromane and amino-1,2,3,4-tetrahydroquin oline derivatives for therapeutic purposes. The aminochromane, aminothiochromane and amino-1,2,3,4-tetrahydroquinoline derivatives are GlyT1 inhibitors.
An organozinc aid in alkylation and acylation of lithium enolates
作者:Yasushi Morita、Masaaki Suzuki、Ryoji Noyori
DOI:10.1021/jo00269a006
日期:1989.4
YASUSHI, MORITA;MAZAAKI, SUZUKI;RYOJI, NOGOCI, J. ORG. CHEM., 54,(1989) N, C. 1785-1787
作者:YASUSHI, MORITA、MAZAAKI, SUZUKI、RYOJI, NOGOCI
DOI:——
日期:——
METHOD OF TREATING ACID-SENSING ION CHANNEL MEDIATED PAIN, COUGH SUPPRESSION, AND CENTRAL NERVOUS SYSTEM DISORDERS
申请人:JOHNSON Michael R.
公开号:US20080293740A1
公开(公告)日:2008-11-27
The present invention provides a variety of methods of treatment of acid-sensing ion channel (ASIC) mediated pain, cough, and central nervous system disorders by ASICs inhibition with a series of pyrazinoylguanidine compounds represented by formula (I) as defined herein.
Aminotetraline and aminoindane derivatives, pharmaceutical compositions containing them, and their use in therapy
申请人:AbbVie Deutschland GmbH & Co. KG
公开号:US20170172993A1
公开(公告)日:2017-06-22
The present invention relates to aminotetraline and aminoindane derivatives of the formula (I)
or a physiologically tolerated salt thereof.
The invention relates to pharmaceutical compositions comprising such aminotetraline and aminoindane derivatives, and the use of such aminotetraline and aminoindane derivatives for therapeutic purposes. The aminotetraline and aminoindane derivatives are GlyT1 inhibitors.