I. THE UREA AND THIOUREA ADDUCTION OF C SUB 5 TO C SUB 42 HYDROCARBONS II. THE REACTION OF DODECYLLITHIUM WITH 2,5- DICYCLOPENTYLIDENECYCLOPENTANONE AND WITH 2,5-DICYCLOPENTYLCYCLOPENTANONEIII. THE REACTION OF CYCLOPENTYLLITHIUM WITH ETHYL ACETATE AND WITH METHYL PALMITATE