USEFUL SYNTHETIC PREPARATIONS
343
VI.A.5-2 Miyashita, M., Shiina, I., and Mukaiyama, T., BCJ, 67, 210; see
also: Davis, A.P. and Walsh, J.J., TL, 35,4865.
O
O
M
H 2 NAr, Lewis Acid, CH 2 C1 2 _
II
R"'X>TMS
R " ^ N H A r
92-99 %
VI.A.5-3 Sim, T.B. and Yoon, N.M., SL, 827; Sidler, D.R. et al., JOC, 59,
1231; Bon, E., Bigg, D.C.H., and Bertrand, G., JOC, 59, 1904 and 4035.
O
O
Il
NaEt 2 Al(NRlR2) 2
U
R ^ O R '
*"
R ^ N R 1 R 2
83-96 %
VI.A.5-4 Gotor, V. et al., SL, 529 and T, 50, 6935.
R'
R'
I
NH 3 , lipase, dioxane
I
R
^ S x > 2 M e
*<><€, 60-160 h '
Κ
^ ^ € Ο Ν Η 2
77-98 %
VI.A.5-5 Miller, MJ. et al., T, 50, 8275.
O
y
R
X
M e ^ ^ N H T s
^ — N N
»Pr 2 NEt, MeCN
O
OTs
O'
OTs
66%
343
VI.A.5-2 Miyashita, M., Shiina, I., and Mukaiyama, T., BCJ, 67, 210; see
also: Davis, A.P. and Walsh, J.J., TL, 35,4865.
O
O
M
H 2 NAr, Lewis Acid, CH 2 C1 2 _
II
R"'X>TMS
R " ^ N H A r
92-99 %
VI.A.5-3 Sim, T.B. and Yoon, N.M., SL, 827; Sidler, D.R. et al., JOC, 59,
1231; Bon, E., Bigg, D.C.H., and Bertrand, G., JOC, 59, 1904 and 4035.
O
O
Il
NaEt 2 Al(NRlR2) 2
U
R ^ O R '
*"
R ^ N R 1 R 2
83-96 %
VI.A.5-4 Gotor, V. et al., SL, 529 and T, 50, 6935.
R'
R'
I
NH 3 , lipase, dioxane
I
R
^ S x > 2 M e
*<><€, 60-160 h '
Κ
^ ^ € Ο Ν Η 2
77-98 %
VI.A.5-5 Miller, MJ. et al., T, 50, 8275.
O
y
R
X
M e ^ ^ N H T s
^ — N N
»Pr 2 NEt, MeCN
O
OTs
O'
OTs
66%