On July 1, 2020, Kubasov, A. S.; Turishev, E. S.; Golubev, A. V.; Bykov, A. Yu.; Zhizhin, K. Yu.; Kuznetsov, N. T. published an article.Synthetic Route of 574-98-1 The title of the article was The method for synthesis of 2-sulfonium closo-decaborate anions derivatives with exo-polyhedral aminogroups. And the article contained the following:
A method for the preparation of sulfonium derivatives of the closo-decaborate anion with the exo-polyhedral amino groups [B10H9S((CH2)nNH2)2]- (n = 1-3) has been developed. The method is based on the alkylation of the [B10H9SH]2- anion with N-bromoalkyl phthalimides and subsequent removal of the phthalimide protection with hydrazine. We could show that the interaction between the [B10H9SH]2- anion with bromomethyl phthalimide groups allowed us to prepare selectively mono-S-substituted sulfanyl derivatives [B10H9SCH2N(CO)2C6H4]2-. Due to the high stability of the sulfonium derivatives of the closo-decaborate anion, it is possible to obtain perchlorinated analogs of these compounds by chlorination of the salts n-Bu4N[B10H9S((CH2)nN(CO)2C6H4)2] (n = 1-3) with sulfuryl chloride in acetonitrile. The experimental process involved the reaction of 2-(2-Bromoethyl)isoindoline-1,3-dione(cas: 574-98-1).Synthetic Route of 574-98-1
The Article related to crystal structure mol sulfonium decaborate anion polyhedral amino preparation, Organometallic and Organometalloidal Compounds: Boron Compounds and other aspects.Synthetic Route of 574-98-1
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary