307551-33-3

Upstream product

• 307550-72-7 6-(4-chloro-phenyl)-4-methyl-cyclohex-3-ene-1,1-dicarboxylic acid 
• 289914-77-8 11-(4-chloro-phenyl)-3,3,9-trimethyl-2,4-dioxa-spiro[5.5]undec-8-ene-1,5-dione 

Relevant academic research and scientific papers

Unusual amino acids. 5.* synthesis of 3,5-dioxopyrazolidine derivatives

Monohydrazides of 2-R-4-methyl-4-cyclohexene-1, 1-dicarboxylic acids react with trifluoroacetic acid anhydride to give 4-substituted 3,5-dioxopyrazolidines, with phosphorus trichloride to give 4-(2-R-5-chloro-4-methylcyclohexane)-3,5-dioxopyrazolidines, a

Exotic aminoacids: II. Reaction of 2-R-4-methylcyclohex-4-ene-1,1-isopropylidenemalonates with some O- and N-nucleophiles

2-R-4-Methylcyclohex-4-ene-1,1-isopropylidenemalonates in reaction with amines undergo opening of 1,3-dioxane cycle to yield mono- or dicarboxylic acids depending on the basicity of amines and reaction temperature.