A simple, three-component synthesis of 2-aminothiazoles using trimethylsilyl isothiocyanate
摘要:
The first multicomponent, solution-phase protocol to prepare privileged 2-aminothiazoles from alpha-bromocarbonyl compounds and amines (aromatic and aliphatic) using commercially available trimethylsilyl isothiocyanate is described. (C) 2013 Elsevier Ltd. All rights reserved.
COMPOSITION FOR DYEING KERATIN FIBRES, COMPRISING AN OXIDATION BASE AND A PARTICULAR HETEROARYL COUPLER
申请人:L'OREAL
公开号:US20170087075A1
公开(公告)日:2017-03-30
The invention relates to a composition comprising: i) at least one oxidation base, preferably of heterocyclic and/or para-phenylenediamine type; and ii) at least one heteroaryl coupler of formula (I), with R
1
, R
2
, R
3
, A and X as defined in the description. The invention also relates to a process for dyeing keratin fibres using ingredients i) and ii); to a kit comprising ingredients i) and ii); and to the use of ingredient i) combined with ii) for dyeing keratin fibres. The composition of the invention leads to particularly powerful, chromatic and sparingly selective colourings.