Cyclopentanedicarboxylates

IR-cis)-l, 2,2-trimethyl-l,3-cyclopentanedicarboxylic acid compd. with (S)-A(-ethyl-a-methyl-3-(trifluoromethyl)-benzeneethanamine (1 1)... 

Trimethylcyclohex-2-en-l-one, i93 1,2,2-Trimethyl- 1,3-cyclopentanedicarboxylic acid, c4 Trimethylene chlorobromine, b307 Trimethylene chlorohydrin, c231 Trimethylenediamine, pi 90... 

The cyclopentanedicarboxylate 7, when treated with 2 equivalents of LDA in tetrahydrofurandi-ethyl ether, followed by 2.4 equivalents of methyl iodide is monomethylated to give a mixture of 6a and 6b (83%). whereas in tetrahydrofuran alone a 1 2 mixture of the dimethylated products 8a and 8b is isolated in equally high yield73. 

Z)-3-Tributylstannylmethylene-4-isopropyl-1,1-cyclopentanedicarboxylic acid, dimethyl ester, 66, 77... 

Trimethyl borate, t319 Trimethylchlorosilane, c255 a, ,4-Trimethyl-3-cyclohexene-l-methanol, t7 3,5,5-Trimethylcyclohex-2-en-1 -one, 182 1,2,2-Trimethyl-1,3-cyclopentanedicarboxylic acid, c5... 

Cyclopentanedicarboxylic acid, 1-methyl-, cis-( )- (70433-31-7), 68, 41 1-Methyl-1-cyclopentene Cyclopentene, 1-methyl- (693-89-0), 68, 41 Methyl N.N-dichlorocarbamate Carbamic acid, dichloro-, methyl ester (16487-46-0), 65, 159... 

Cycloaddition of l-bromo-2-chlorocyclopropene to diethyl 3,4-dimethylene-1,1-cyclopentanedicarboxylate has also been reported. 

Dimethyl 2-Benzyl-l,l-cyclopentanedicarboxylate (7, Z = COOCH, R = C6H5) Typical Procedure34-3S ... 

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