- A bidirectional synthesis of spiroacetals via Rh(ii)-catalysed C-H insertion.
A bidirectional synthesis of spiroacetals via Rh(ii)-catalysed C-H insertion.
Chemical communications (Cambridge, England) (2017-03-31)
Romain J Lepage, Jonathan M White, Mark J Coster
PMID28357432
ABSTRACT
Acyclic methylene acetals bearing two diazoester subunits have been converted to [5,5]-spiroacetals via bidirectional C-H insertion under Rh(ii) catalysis. Using a chiral Rh(ii) catalyst, the major diastereomer can be produced in high enantiomeric excess (89%).
MATERIALS