On January 31, 2019, Zhou, Qiaoxia; Pan, Rihuang; Shan, Huanyu; Lin, Xufeng published an article.Reference of (1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl carbonochloridate The title of the article was Synthesis and Optical Resolution of 3,3,3′,3′-Tetramethyl-1,1′-spirobiindane-7,7′-diol. And the article contained the following:
A novel chiral C2-sym. spiro diol, 3,3,3′,3′-tetramethyl-1,1′-spirobiindane-7,7′-diol (TMSIOL), was conveniently prepared via practical seven-step route from Bisphenol A in 45.1% overall yield. L-Menthyl chloroformate was used as optical resolving agent for the separation of the two enantiomers of TMSIOL. The experimental process involved the reaction of (1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl carbonochloridate(cas: 14602-86-9).Reference of (1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl carbonochloridate
The Article related to tetramethyl spirobiindanediol preparation optical resolution enantioselective, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Benzocyclopropenes, Benzocyclobutenes, and Indenes and other aspects.Reference of (1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl carbonochloridate
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics