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. 2008 Nov 1;50(1):115–117. doi: 10.1016/j.tetlet.2008.10.097

Table 1.

Synthesis of 4a–n

2 3 4 Ar R1 R2 R3 %a
a a a Ph Me H Me 80
a b b Ph Me nBu Me 76
a c c Ph Me nHept Me 75
b a d 4-MeC6H4 Me H Me 57
b d e 4-MeC6H4 Me Me Me 65
b b g 4-MeC6H4 Me nBu Me 65
b c h 4-MeC6H4 Me nHept Me 60
b e f 4-MeC6H4 Me nOct Me 59
c a i 4-ClC6H4 Me H Me 47
c d j 4-ClC6H4 Me Me Me 48
c f k 4-ClC6H4 Me Et Et 47
c g l 4-ClC6H4 Me nHex Me 50
c e m 4-ClC6H4 Me nOct Me 52
d a n 4-MeC6H4 4-(O2N)C6H4 H Me 45
a

Yields of isolated products.