IMIDAZO 1, 2-A PYRIMIDINE DERIVATIVES FOR THE TREATMENT OF DISEASES SUCH AS DIABETES
申请人:Klein Markus
公开号:US20100249151A1
公开(公告)日:2010-09-30
Novel compounds of the formula (I), in which W, T, R
1
, R
2
, R
3
, R
4
, R
5
, R
6
and X
7
have the meanings indicated in Patent Claim
1
, are suitable as antidiabetics.
Screw sense selective polymerization of achiral isocyanides catalyzed by optically active nickel(II) complexes
作者:Paul C. J. Kamer、Roeland J. M. Nolte、Wiendelt. Drenth
DOI:10.1021/ja00228a035
日期:1988.9
screw sense. Therefore, it should be possible to obtain opticallyactive polymers by using chiral catalysts. In the present paper we describe the synthesis of opticallyactivepoly (isocyanides) by using Ni(II) complexes of opticallyactive amines as catalysts.15 The prevailing screw sense of the polymers is derived from CD R N H 2 1 R N H C H O 2 R N +
各种非手性异氰化物与该催化剂的聚合产生光学活性聚合物,其对映体过量高达 83%。在质子酸、路易斯酸或 Ni(II) 盐作为催化剂存在下,异氰化物聚合生成聚(异氰化物),也称为聚(亚氨基亚甲基)或聚(碳酰亚胺酰基)。1,2 Ni(II) 盐是多功能催化剂,在我们看来,最适合我们的实验。聚(异氰化物)是方案 I n Ni(II) ( RN = C < ) 中的不寻常聚合物 „ 其主链的每个原子都带有侧链 .1,2 这一特征导致围绕单键的旋转受限连接主链碳原子。单键周围可能有两种构象,即。R 和 S 。所得聚合物将是具有P和M螺杆的非对映异构分子的混合物。这种混合物将包含过量的一种螺旋感。在大约 20 种不同的光学活性异氰化物 0.10" 12 中观察到了这一点。在另一个过程中,我们通过特异性抑制外消旋对的一个螺旋方向的生长来制备光学活性聚合物。5,13 最后,在一种情况下,光学活性聚合物活性聚
Magnesium Aldimines Prepared by Addition of Organomagnesium Halides to 2,4,6‐Trichlorophenyl Isocyanide: Synthesis of 1,2‐Dicarbonyl Derivatives
The selective addition of organomagnesium reagents to 2,4,6‐trichlorophenyl isocyanide leading to magnesiated aldimines is reported. These aldimines react with Weinreb amides, ketones, or carbonates to provide the corresponding carbonyl derivatives after acidic cleavage. This allows for an efficient synthesis of 1,2‐dicarbonyl compounds and α‐hydroxy ketones.
Preparation, structure, and redox properties of isocyanide complexes of molybdenum(0) and tungsten(0)
作者:Joseph Chatt、Clive M. Elson、Armando J. L. Pombeiro、Raymond L. Richards、Geoffrey H. D. Royston
DOI:10.1039/dt9780000165
日期:——
The complexes trans-[M(CNR)2(dppe)2](A)(M = Mo or W; R = Me, But, Ph, C6H4Me-4, C6H4Cl-4, C6H3Cl2-2,6, or C6H4OMe-4; dppe = Ph2PCH2CH2PPh2) have been prepared. They have low ν(NC) values which are discussed in terms of their electronic structure. The electrochemical properties of the complexes are described and correlations are drawn between their redox potentials and the electronic properties of the
复合物的反式- [M(CNR)2(DPPE)2 ](A)(M = Mo或W; R = Me中,卜吨中,Ph,C 6 H ^ 4 ME-4,C 6 H ^ 4 CL-4, C 6 H 3 Cl 2 -2,6或C 6 H 4 OMe-4; dppe = Ph 2 PCH 2 CH 2 PPh 2)已经准备好了。它们具有较低的ν(NC)值,将根据其电子结构进行讨论。描述了配合物的电化学性质,并在它们的氧化还原电势和异氰化物配体的电子性质之间绘制了相关性。
A Fluorinated Cobalt(III) Porphyrin Complex for Hydroalkoxylation of Alkynes
A fluorinated cobalt(III) porphyrin complex [Co(TPFPP)NTf2·2C2H5OH, where TPFPP=5,10,15,20-tetrakis(pentafluorophenyl)porphyrin, Tf=CF3SO2] promotes hydroalkoxylation of alkynes to give acetals in good to excellent yields. The acetals can be directly functionalized with nucleophiles in a one-pot procedure.