1-Thiadiazolyl-5-acylimidazolidinones

1-Thiadiazolyl-5-furfuryl and tetrahydrofurfuryl aminoimidazolid

1-Thiadiazolyl-5-phenoxy- and phenylthioalkanoyloxy imidazolidin

1-Thiadiazolyl-6-alkoxytetrahydropyrimidinones

1-Thiazolyl-5-acyloxyimidazolidinones

1-Thiazolyl-5-hydroxyimidazolidinones

1-Thiazolyl-5-phenoxy and phenylthioalkanoyloxyimidazolidinones

1-Thiazolyl-5-pyridylcarbonyloxyimidazolidinones

1-Triarylalkyl-4-phenyl-4-piperidine carboxylic acids and deriva

1-Tricyanoinylpyrene

1-Triorganostannyl-3-organothio-4-substituted-1,2,4-delta.sup.2

1-Vinyl-4,5,6,7-tetrahydroindole and preparation thereof

1-[(5-Nitro-2-furoyl)methyl]-2(1H) pyridone

1-[(Allylamino)-methyl]-6-phenyl-4H-s-triazolo[4,3-a][1,4]benzod

1-[(Aminooxy)-methyl]-6-substituted-4H-s-triazolo[4,3-a][1,4] be

1-[(Dialkylamino)met hyl]-6-phenyl-4H-s-[4,3,-a][1,4]triazoloben

1-[(Diarylmethyl)aminoalkyl]piperidimes

1-[(Dimethylamino)-methyl]-6-aryl-4H-imidazo[1,5-a][1,4]benzodia

1-[(Hydroxyamino)methyl]-6-aryl-4H-s-triazolo[4,3-a][1,4]benzodi

1-[1,2,4-TRIAZOLYL-(1)]-2-ARYLOXY-3-HYDROXY-ALKANES