Abstract

The reaction of 1-(4,5-dimeth-oxy-2,3-di-nitro-phen-yl)-2-methyl-propan-1-ol and butyl-iso-cyanate using di-butyl-tin dilaurate as a catalyst afforded 1-(4,5-dimeth-oxy-2,3-di-nitro-phen-yl)-2-methyl-propyl N-butyl-carbamate, C17H25N3O8, which released butyl-amine upon photoirradiation. Single crystals of the title compound were grown in a 1:1 mixed solution of hexane and ethyl acetate. Two nitro groups and one meth-oxy group are twisted out of the plane of the aromatic ring in the novel photo-protecting group. Inter-molecular hydrogen bonds are observed between N-butyl-carbamate moieties parallel to the a axis.

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