Benzene, 1-(isocyanatomethyl)-2-(trifluoromethoxy)- → 6-(2-Trifluoromethoxy-benzylcarbamoyl)-1,6-diaza-spiro[3.3]heptane-1-carboxylic acid tert-butyl ester

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Reaction Steps

In analogy to the experimental procedure of example 8) 1,6-diaza-spiro[3.3]heptane-1-carboxylic acid tert-butyl ester instead of 1-benzyl-1,6-diaza-spiro[3.3]heptane was converted using 1-trifluoromethoxy-2-isocyanatomethyl-benzene instead of (3-isocyanato-propyl)-benzene into the title compound which was used directly in the next step without further purification.

Provenance & Evidence