9H-fluoren-9-ylmethyl [(R)-1-((S)-1-allyloxymethyl-2-methylpropylcarbamoyl)-2-(4-allyloxyphenyl)ethyl]carbamate → 9H-Fluoren-9-ylmethyl ((9S,12R)-9-isopropyl-11-oxo-2,7-dioxa-10-azabicyclo[12.2.2]octadeca-1(17),4,14(18),15-tetraen-12-yl)carbamate

Participants

Reaction Steps

A solution of 1.25 g (2.20 mmol) of 9H-fluoren-9-ylmethyl[(R)-1-((S)-1-allyloxymethyl-2-methylpropylcarbamoyl)-2-(4-allyloxyphenyl)ethyl]carbamate and 0.40 g (0.659 mmol) of dichloro(o-isopropoxyphenylmethylene)(tricyclohexylphosphine)ruthenium (Hoyveda-Grubbs catalyst) in 610 ml of dichloromethane was stirred at 40° C. for 24 h. The reaction mixture was then concentrated, and the residue was purified by chromatography on silica gel. 1.03 g of the desired compound were obtained as a colorless solid.

Provenance & Evidence