反应详情

Prepared analogously to the method described in Example N(v) above from ethyl 3-chloro-5-methylphenylacetate (4.89 g; 23 mmol; from step (iv) above), ethyl formate (3.3 g; 41.4 mmol) and Na (0.63 g; 27.6 mmol; added in small lumps) in dry ethyl ether (50 mL) to yield 3.4 g (61%) of the sub-title compound as a clear oil which slowly crystallised on standing.

1. customPrepared analogously to the method