| 摘要 |
Novel process for the preparation of octahydro-1,2,4-methenopentalenyl-(5)exo-isocyanate comprising reacting an exo-endo isomer mixture consisting substantially of the exo isomer of a lower alkoxyalkyl octahydro-1,2,4-methenopentalene-5-carboxylate with hydrazine to obtain the corresponding carboxylic acid-hydrazide, freeing this of the endo isomer content by recrystallization from lower haloalkanes, then converting the acid hydrazide thus purified, with nitrous acid into the acid azide and decomposing this with heat.
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