Table 3.

Scope with respect to the nucleophile.

entry	nucleophile	yield (%)a
1		83
2		71
3		70
4		61
5b		84
6		60
7b		75
8		64
9		52
10		54
11		80

^aYields of purified product (average of two experiments).

^bIsolated as the trifluoroacetamide derivative.