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Trimethoxybenzaldehyde (TMB) was hydrogenated over Pd/C in H 2-AcOH,in H 2-MeOH and in NH 2NH 2-PhMe system respectively.In Pd/C-TMB-H 2-AcOH system,TMB was reduced into 3,4,5-trimethoxytoluene (TMT) via 3,4,5-trimethoxybenzyl acetate and (1′-hydroxy)ethyl (3,4,5-trimethoxy)benzyl ether.In Pd/C-TMB-H 2-MeOH system,TMB was reduced into TMT via 3,4,5-trimethoxybenzyl alcohol,methyl(3,4,5-trimethoxy)benzyl ether and bis(3,4,5-trimethoxy)benzyl ether.In Pd/C-TMB-NH 2NH 2-PhMe system,TMB was reduced into TMT directly with mild manner and higher selectivity.
Trimethoxybenzaldehyde (TMB) was hydrogenated over Pd / C in H 2 -AcOH, in H 2 -MeH and in NH 2 NH 2 -PhMe system respectively.In Pd / C-TMB-H 2-AcOH system, TMB was reduced to 3, 4,5-trimethoxytoluene (TMT) via 3,4,5-trimethoxybenzyl acetate and (1’-hydroxy) ethyl (3,4,5-trimethoxy) benzyl ether.In Pd / C-TMB- TMB was reduced into TMT via 3,4,5-trimethoxybenzyl alcohol, methyl (3,4,5-trimethoxy) benzyl ether and bis (3,4,5-trimethoxy) benzyl ether.In. Pd / C-TMB-NH2NH 2-PhMe system, TMB was reduced into TMT directly with a mild manner and higher selectivity.