2-{[1,1-Dimethyl-2-(2-phenoxyacetamido)ethyl]amino}-2'-chloro-3',4'-bis(benzyloxy)acetophenone hydrobromide → 1,1-Dimethyl-2-(2-phenoxyacetamido)ethylamine

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The above acetophenone derivative (A) was itself prepared in 85% yield, as a solid m.p. 141°-143° C. by a similar procedure to that described for the equivalent starting material in Example 11, but from 2-{[1,1-dimethyl-2-(2-phenoxyacetamido)ethyl]amino}-2'-chloro-3',4'-bis(benzyloxy)acetophenone hydrobromide. The latter compound was itself obtained in 40% yield as a solid, m.p. 61°-63° C., from N-(2-amino-2-methylpropyl)-2-phenoxyacetamide and 2-bromo-3',4'-bis(benzyloxy)acetophenone using a procedure similar to that in Example 11.

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