反应详情

The title compound was prepared by the method of Example 21 using 30.5 mmole of ethyl chloroformate and 1.0 g (3.8 mmole) of the product compound of Example 9. Complete reaction, as indicated by thin-layer chromatography (See Example 21), required heating for a second day with an additional 30.5 mmole of ethyl chloroformate. Structure assignment was supported by the nmr spectrum and by elemental analysis.

1. customComplete reaction