Tetrahedron p. 3021 - 3028 (1986)
Update date:2022-08-05
Topics:
Horita, Kiyoshi
Yoshikoa, Tadao
Tanaka, Tatsuyoshi
Oikawa, Yuji
Yonemitsu, Osamu
The 4-methoxybenzyl (MPM) protecting group for hydroxy functions is readily removed with DDQ in dichloromethane containing a small amount of water at room temperature.Under these neutral conditions, several other protecting and functional groups remained unchanged. 3,4-Dimethoxybenzyl (DMPM groups are more reactive than MPM groups with DDQ.The benzyl (Bn) protecting group was removed by catalitic hydrogenation over Raney nickel.Selective deprotection of DMPM, MPM and Bn groups is also presented.
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(2010)Doi:10.1055/s-1986-31594
(1986)