N-(4-chlorophenyl)-N’-phenylurea

3'-(4-chlorophenyl)-3',5'-dihydro-10H-spiro[anthracene-9,4'-[1,2,3]triazol]-10-one

tert-butyl 2-(4-chlorophenyl)sulfinamoylacetate

2-丁炔

dichloro-trityl-amine