A substituted m-aminophenol coupler useful in hair dyeing havina the formula
and acid addition salts thereof wherein x and y are selected from the group consisting of halogen and the groups OR of which R ist the same or different alkyl, aminoalkyl of hydroxylalkyl groups, at least one for x or y being a group OR and a process for preparing these compounds.
一种用于染发的取代间氨基苯酚偶联剂,其式及其酸加成盐,其中 x 和 y 选自卤素和基团 OR(其中 R 是相同或不同的烷基、氨基烷基或羟基烷基)组成的组,x 或 y 中至少有一个是基团 OR,以及制备这些化合物的工艺。
Chromatography-Free and Eco-Friendly Synthesis of Aryl Tosylates and Mesylates
作者:Xiangyang Lei、Anusha Jalla、Mhd Abou Shama、Jamie Stafford、Billy Cao
DOI:10.1055/s-0034-1378867
日期:——
Two chromatography-free and eco-friendly protocols have been developed to synthesize aryl tosylates and mesylates by the tosylation and mesylation of the corresponding hydroxyarenes, respectively. These protocols are superior to other known ones regarding the simplicity, reaction time and conditions, the range of substrates, yields, and environmental friendliness.
SIMANENKO, YU. S.;PROKOPEVA, T. M.;BELOUSOVA, I. A.;SAVELOVA, V. A.;POPOV+, REAKTS. SPOSOBNOST ORGAN. SOED., 24,(1987) N 3/87, 358-378
作者:SIMANENKO, YU. S.、PROKOPEVA, T. M.、BELOUSOVA, I. A.、SAVELOVA, V. A.、POPOV+
DOI:——
日期:——
US4838894A
申请人:——
公开号:US4838894A
公开(公告)日:1989-06-13
Sen; Roy, Journal of the Indian Chemical Society, 1956, vol. 33, p. 687