28
ORGANIC SYNTHESIS—1995
I.A.7.a.la-16 Kobayashi, S. et al., TL, 35, 9573, T, 50, 9629 & CL,
217; see also: Mukaiyama, T. et al., BCJ, 67, 1708.
BnQ
OTMS
RCHO +
M OPh
R = TMSSn(OTf) 2 , SnO
Me
/XX
OBn
87%,91%ee
I.A.7.a.la-17 Yamamoto, H. et al., JACS, 116, 10521, T, 50, 2785 &
SL, 963; Sato, M., Kaneko, C. et al., CPB, 42, 839; .
N^Ph
9 ™
Pif
H
cat. =
B-OAr
cat.
H Ö ^ ^ P h
Ph'
Χ0 2
ι Βιι
65%, 99% de
similarly with aldehydes & other chiral B Lewis acids or
B(C 6 F 5 )3
ORGANIC SYNTHESIS—1995
I.A.7.a.la-16 Kobayashi, S. et al., TL, 35, 9573, T, 50, 9629 & CL,
217; see also: Mukaiyama, T. et al., BCJ, 67, 1708.
BnQ
OTMS
RCHO +
M OPh
R = TMSSn(OTf) 2 , SnO
Me
/XX
OBn
87%,91%ee
I.A.7.a.la-17 Yamamoto, H. et al., JACS, 116, 10521, T, 50, 2785 &
SL, 963; Sato, M., Kaneko, C. et al., CPB, 42, 839; .
N^Ph
9 ™
Pif
H
cat. =
B-OAr
cat.
H Ö ^ ^ P h
Ph'
Χ0 2
ι Βιι
65%, 99% de
similarly with aldehydes & other chiral B Lewis acids or
B(C 6 F 5 )3