One-Pot and Three-Component synthesis of Substituted Pyrimidines Catalysed by Boron Sulfuric Acid under Solvent-Free Conditions
作者:Mehdi Soheilizad、Mehdi Adib、Sami Sajjadifar
DOI:10.3184/174751914x14069964360841
日期:2014.9
An efficient, simple and one-pot synthesis of pyrimidine derivatives by a three-component reaction of ketones, triethyl orthoformate, and ammoniumacetate in the presence of boron sulfuric acid as a reusable and efficient catalyst under solvent-free conditions is reported. The reusability of catalyst, simplicity of the starting materials, short reaction time, one-pot, and good yields of products are
An efficient potassium persulfate mediated four component reaction for the construction of 5‐methyl pyrimidine derivatives has been established from readily available methyl ketones, amidine hydrochlorides and dimethyl sulfoxide. This transformation features dimethyl sulfoxide as a dual synthon, acting as the precursors of the methyl and methine units. Four new chemical bonds, involving two C−C and
ORGANOMETALLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
申请人:Samsung Electronics Co., Ltd.
公开号:US20190036039A1
公开(公告)日:2019-01-31
An organometallic compound represented by one of Formulae 1 to 4:
wherein, in Formulae 1 to 4, groups and variables are the same as described in the specification.
PYRAZOLOQUINOLINONE DERIVATIVES, PREPARATION THEREOF AND THERAPEUTIC USE THEREOF
申请人:BENAZET ALEXANDRE
公开号:US20130079337A1
公开(公告)日:2013-03-28
The invention relates to compounds corresponding to formula (I)
in which R1, R2 and R3 are as defined in Claim
1
, and also to the process for preparing them and to their therapeutic use.
ZnCl2-catalyzed three-component coupling reaction involving a variety of functionalized enamines, triethyl orthoformate, and ammonium acetate, which leads to the production of 4,5-disubstituted pyrimidinederivatives in a single step. The procedure can be successfully applied to the efficient synthesis of mono- and disubstituted pyrimidinederivatives, using methyl ketone derivatives instead of enamines