4,5,6,7-TETRAHYDRO-7-OXO (RESPEKTIVE-7-HYDROXI)-BENSO (B) TIOFEN-4-AMIN-DERIVAT TILL ANVENDNING SOM TILLVEXTBEFREMJANDE MEDEL FOR DJUR SAMT FORFARANDE FOR FRAMSTELLNING AV DERIVATEN

摘要

The present invention relates to 4,5,6,7-tetrahydro-7-oxobenzo[b]thien-4-yl isocyanate and isothiocyanate, which are novel and useful intermediates for the preparation of 4,5,6,7-tetrahydro-7-oxobenzo[b]thien-4-ylurea and thiourea compounds which are animal growth promoters.