162
ORGANIC SYNTHESIS—1995
I.H.2-2 Zhang, W. and Dowd, P., TL, 35, 5161.
H
u°, TMSI, Znl 2 O
2. H 3 0
+
O
73%
I.H.2-3 Dowd, P. et al, TL, 35, 5563.
H
H
Λ Bu,Sri H, AIBN, 8h
I.H.2-4 Martinez, A.G. et al., TA, 5, 1599.
1. TMSCN, Znl 2
C 5 H 12 , 0°C, 2h
2. Tf 2 0, pyridine '
O
CH 2 C1 2 , rt, 24h
H,C
82%
I.H.2-5 Rawal, V.H. and Dufour, C , JACS, 116, 2613.
O
LDBB, THF, -78°C
CH,
73%