56105-19-2Relevant articles and documents
Chiral geminal disilyl alkane compound, synthesis method and applications thereof
-
Paragraph 0204; 0205; 0206; 0207; 0209, (2019/01/14)
The present invention discloses a chiral geminal disilyl alkane compound, which is represented by a formula V, wherein * represents a chiral carbon atom in the formula V. The invention discloses a synthesis method of the chiral geminal disilyl alkane compound, wherein the synthesis method comprises: carrying out a reaction in the presence of a reducing agent by using alkyne represented by a formula I, dihydrosilane represented by a formula II and trihydrosilane represented by a formula III as raw materials and using Xantphos-CoBr2 and a chiral CoX2-OIP complex as catalysts under an inert gas to prepare the chiral geminal disilyl alkane compound represented by the formula V. According to the present invention, the method has characteristics of mild reaction condition, simple operation, highatomic economy, no requirement of the addition of any other toxic transition metals (such as ruthenium, rhodium, palladium and the like) salts, high yield and high enantioselectivity, and has great practical value in the synthesis of drugs and materials, wherein the yield is generally 50-85%, and the enantioselectivity is generally 93-99%. The formulas I, II, III and V are defined in the specification.
Alkylation Reactions of Azodicarboxylate Esters with 4-Alkyl-1,4-Dihydropyridines under Catalyst-Free Conditions
Nakajima, Kazunari,Zhang, Yulin,Nishibayashi, Yoshiaki
supporting information, p. 4642 - 4645 (2019/06/17)
Introduction of alkyl groups on azodicarboxylate esters is an important method to prepare alkyl amine derivatives. Herein, we report reactions of 4-alkyl-1,4-dihydropyridines as alkylation reagents with di-tert-butyl azodicarboxylate to prepare alkyl amin
HETEROARYL COMPOUNDS, PHARMACEUTICAL COMPOSITIONS THEREOF, AND THEIR THERAPEUTIC USE
-
Paragraph 00433; 00434, (2019/08/29)
Provided herein are heteroaryl compounds, for example, a compound of Formula I or IA, and pharmaceutical compositions thereof. Also provided herein are methods of their use for treating, ameliorating, or preventing one or more symptoms of a disorder, disease, or condition mediated by a casein kinase 1 (CK1), an interleukin-1 receptor associated kinase (IRAK1), or a cyclin-dependent kinase 9 (CDK9). Formula: (I),(IA)