反应详情

The product of Example 142 (0.52 g, 1.47 mmol) was dissolved in a 1:1 (v:v) solution (6 ml) of trifluoroacetic acid and dichloromethane and stirred at room temperature for 1 h. The volatiles were removed in vacuo to provide the title compound (0.437 g, 100%) as an oil which crystallized on standing. The unpurified material was of sufficient purity to employ in subsequent steps. Mass spectrum: (M)30 =298.

1. customThe volatiles were removed in vacuo