Isocyanate → 1,4,4a,9,10,10a-Hexahydro-4a-isocyanato-9-methylphenanthrene

Participants

Reaction Steps

The unsaturated carboxylic acid (1.5 g, 6.2 mmol) derived from hydrolysis of the product from Example 29 was converted to the isocyanate with diphenylphosphorylazide (1.87 g, 6.8 mmol) according to the method used in Example 31. Purification by silica gel chromatography gave the title compound as a clear oil (1.1 g, 74%).

Provenance & Evidence