(2,5-dioxopyrrolidin-1-yl) 2-chloroacetate

Conditions: temp:23.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of (R)-N2-(1,2,3,4-tetrahydro-naphthalen-1-yl)-4H-benzo[d][1,3]oxazine-2,6-diamine (Example 33) (293 mg, 1 mmol) and chloro-acetic acid 2,5-dioxo-pyrrolidin-1-yl ester (CAS 27243-15-8) (192 mg, 1 mmol) in acetonitrile (2 ml) was stirred at 23° C. for 1 h. Poured onto water and extracted with ethyl acetate, dried the combined organic layers over sodium sulfate, filtered off and evaporated totally to give the title compound as a light red oil (370 mg, 100%, HPLC 1.185 min), MS (ISP) m/e=370.1 [(M+H)+] and 372 [(M+2+H)+]. Poured onto water extracted with ethyl acetate dried the combined organic layers over sodium sulfate filtered off evaporated totally