324
ORGANIC SYNTHESIS—1995
V.D. Protecting Groups for Aldehydes and Ketones
V.D-1 Samizu, K. and Ogasawara, K., TL, 35,7989.
A r y " O v R
Na, NH 3 (D, -33°C
A r \ ^
M e
r
\ >
CHO
49-81 %
V.D-2 Cahiez, G. et al., TL, 35, 6295; Rossi, L. and Pecunioso, A., TL, 35,
5285.
O
TMSO
R
l:PhMnN(Me)Ph,-10°C
2: TMSC1, -10°C to rt
R
R = C 5 H„
90%
V.D-3 Mahrwald, R., JPR, 336, 361; Stille, J.R. et al., SC, 24, 583.
PhCHO
TKOR^TiCMcat^
p h C H ( O R ) 2
hexane,rt
η η ^ %
V.D-4 Kumar, T.P. et al., JCR(S), 394.
O
A
R
R'
OH H-Y zeolite, CH 2 CI 2 ,A*
46-95 %
ORGANIC SYNTHESIS—1995
V.D. Protecting Groups for Aldehydes and Ketones
V.D-1 Samizu, K. and Ogasawara, K., TL, 35,7989.
A r y " O v R
Na, NH 3 (D, -33°C
A r \ ^
M e
r
\ >
CHO
49-81 %
V.D-2 Cahiez, G. et al., TL, 35, 6295; Rossi, L. and Pecunioso, A., TL, 35,
5285.
O
TMSO
R
l:PhMnN(Me)Ph,-10°C
2: TMSC1, -10°C to rt
R
R = C 5 H„
90%
V.D-3 Mahrwald, R., JPR, 336, 361; Stille, J.R. et al., SC, 24, 583.
PhCHO
TKOR^TiCMcat^
p h C H ( O R ) 2
hexane,rt
η η ^ %
V.D-4 Kumar, T.P. et al., JCR(S), 394.
O
A
R
R'
OH H-Y zeolite, CH 2 CI 2 ,A*
46-95 %