An efficient and practical methodology to obtain α-thio-β-dicarbonyl compounds was presented under alkaline conditions via potassium iodide (KI) catalysis.
在碱性条件下,通过碘化钾(KI)催化,提出了一种获得α-硫代-β-二羰基化合物的高效实用方法。
Enols of 2-nitro- and related 2-substituted malonamides
作者:Ahmad Basheer、Masaaki Mishima、Zvi Rappoport
DOI:10.1002/poc.1611
日期:——
The structures of 2‐substituted malonamides, YCH(CONR1R2)CONR3R4 (Y = Br, SO2Me, CONH2, COMe, and NO2) were investigated. When Y = Br, R1R2 = R3R4 = HEt; Y = SO2Me, R1–R4 = H and for Y = CONH2 or CONHPh, R1–R4 = Me, the structure in solution is that of the amide tautomer. X‐ray crystallography shows solid‐state amide structures for Y = SO2Me or CONH2, R1–R4 = H. Nitromalonamide displays an enol structure
研究了2-取代的丙二酰胺YCH(CONR 1 R 2)CONR 3 R 4(Y = Br,SO 2 Me,CONH 2,COMe和NO 2)的结构。当Y = Br时,R 1 R 2 = R 3 R 4 = HEt。Y = SO 2 Me,R 1 -R 4 = H,对于Y = CONH 2或CONHPh,R 1 -R 4 = Me,溶液中的结构是酰胺互变异构体。X射线晶体学显示Y = SO 2 Me或CONH 2的固态酰胺结构,R 1 -R 4 =H。硝基丙二酰胺在固态下显示具有强氢键的烯醇结构(在100 K时O … O距离= 2.3730Å),并且d(OH)≠d(O … H)。在溶液中观察到明显的对称烯醇,即使在高极性溶剂(如DMSO-d 6)中也占相当大的百分比,但随着溶剂极性的增加,K烯醇值会降低。的Ñ,Ñ ' -二甲基衍生物是以下烯醇。乙酰丙二酰胺在非极性溶剂中显示出乙酰基
Process of preparing paroxetine and intermediates for use therein
申请人:——
公开号:US20040073038A1
公开(公告)日:2004-04-15
A process of preparing paroxetine, a process for preparing intermediates for use in the preparation of paroxetine and specific intermediates useful in paroxetine preparation. The specific intermediates that can be employed include compounds of formulae (V), (VI), or (VII).
1
NOVEL SUBSTRATES OF O6-ALKYLGUANINE-DNA ALKYLTRANSFERASE AND MUTANTS THEREOF
申请人:Bourrier Emmanuel
公开号:US20110236952A1
公开(公告)日:2011-09-29
The invention relates to compounds of formula (I′):
in which A, L
2
, M and B are as defined in the description.
These compounds are substrates of O
6
-alkylguanine-DNA alkyltransferase and mutants
Modifiable polyunsaturated polymers and processes for their preparation
申请人:Parthiban Anbanandam
公开号:US20060189774A1
公开(公告)日:2006-08-24
The present invention relates to modifiable linear polyunsaturated polymers and processes for preparing the same comprising reacting solely at least one bifunctional nucleophilic compound with at least one α-functional unsaturated monomer. The at least one bifunctional nucleophilic compound of the invention comprises two nucleophiles independently selected from the group consisting of C, N, O, S and Se. The at least one α-functional unsaturated monomer of the invention comprises two leaving groups L
1
and L
2
, wherein at least one of the leaving groups L
1
and L
2
of the at least one α-functional unsaturated monomer is part of the nonaromatic unsaturated structure C═C—C
α
-L. The double bond of said α-functional unsaturated monomer is maintained in the polyunsaturated polymer.
本发明涉及可改性线性多不饱和聚合物以及制备该聚合物的工艺,包括仅使至少一种双官能团亲核化合物与至少一种α官能团不饱和单体反应。本发明的至少一种双官能团亲核化合物包括两个独立选自 C、N、O、S 和 Se 组的亲核物。本发明的至少一种 α-官能团不饱和单体包括两个离去基团 L
1
和 L
2
其中至少一个离去基团 L
1
和 L
2
的至少一个离去基团 L 1 和 L 2 是非芳香族不饱和结构 C═C-C
α
-L.所述 α-官能团不饱和单体的双键保留在多不饱和聚合物中。