Synthesis of 1,1'-Spirobiindane-7,7'-Disulfonic Acid and Disulfonimide: Application for Catalytic Asymmetric Aminalization.
Kurihara T, Satake S, Hatano M, Ishihara K, Yoshino T, Matsunaga S.
Kurihara T, et al.
Chem Asian J. 2018 Sep 4;13(17):2378-2381. doi: 10.1002/asia.201800341. Epub 2018 May 9.
Chem Asian J. 2018.
PMID: 29644792
Free article.
1,1'-Spirobiindane-7,7'-disulfonic acid (SPISA) and 1,1'-spirobiindane-7,7'-disulfonimide were synthesized from 1,1'-spirobiindane-7,7'-diol (SPINOL) in 4 steps using a Pd-catalyzed Newman-Kwart rearrangement as a key step. These new catalysts possessing a rigid spirocycli …
1,1'-Spirobiindane-7,7'-disulfonic acid (SPISA) and 1,1'-spirobiindane-7,7'-disulfonimide were synthesized from 1,1'-spirobiindane-7,7'-diol …