Novel compounds of the series of N-phenyl-N-(4-piperidinyl)amides having a (4,5-dihydro-4-R-5-oxo-1H-tetrazol-1-yl)alkyl or (4,5-dihydro-4-R-5-thioxo-1H-tetrazol-1-yl)alkyl substituent group in the 1-position of the piperidine nucleus, said compounds being useful as analgesic agents.
Novel herbicidal tetrazolinone derivatives of the formula ##STR1## and intermediates therefor of the formula ##STR2## wherein R.sup.1 is alkyl substituted by halogen, and R.sup.2 and R.sup.3 each independently is alkyl, alkenyl, alkynyl, cycloalkyl, phenyl or substituted phenyl, or R.sup.2 and R.sup.3 together with the N-atom to which they are attached, which may form a 5- or 6-membered heterocyclic ring.