38158-67-7Relevant articles and documents
Iron-Catalyzed Synthesis of 2-Aminofurans from 2-Haloketones and Tertiary Amines or Enamines
Wang, Le-Cheng,Geng, Hui-Qing,Peng, Jin-Bao,Wu, Xiao-Feng
, p. 2605 - 2616 (2020)
The selective synthesis of heterocycles from readily available substrates and catalyzed by an abundant and environmental benign catalyst continues to be an attractive topic. In this communication, we report an interesting protocol for the synthesis of 2-aminofurans. Starting from 2-haloketones and tertiary amines, with abundant iron salt as the catalyst, various 2-aminofurans were produced in good yields. Control experiments were performed to understand the reaction pathway. Based on the identified reaction pathway, the substrates for this transformation can be extended from tertiary amines to enamines and even with better final yields. Finally, a formal three-component reaction can also be realized by forming the enamines in-situ from aldehydes and amines.
Transition metal complexes as dye forming catalysts in hair coloring compositions
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, (2008/06/13)
A hair coloring composition comprising a first composition which comprises: (a) a dye forming transition metal salt or complex; which is first applied to the hair; and a second composition which comprises the following two compositions which are mixed just prior to application to the hair: (a) a composition comprising a water-soluble peroxygen oxidizing agent; and (b) a composition comprising one or more oxidative hair coloring agents selected from the group consisting of an aromatic diamine, an aminophenol, a polyhydric phenol a catechol and mixtures thereof.
Hair conditioning compositions and their use in hair colouring compositions
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, (2008/06/13)
The present invention relates to a hair care composition comprising a aminofunctional polysiloxane having a specified average effective particle size which provides improved durable conditioning particularly when utilised in conjunction with a hair colouring composition.