36858-84-1

Upstream product

• 1871-76-7 diphenylacetic acid chloride 
• 2026-11-1 <α-(Ethoxycarbonyl)benzyliden>triphenylphosphoran 
• 31641-78-8 ethyl 2-diethoxyphosphoryl-2-phenylacetate 
• 525-06-4 diphenyl ketene 

Downstream Products

• 108832-83-3 6-Benzhydrylidene-3-cyclohexyl-2-[(Z)-cyclohexylimino]-5-phenyl-[1,3]oxazinan-4-one 
• 108832-88-8 N,N'-diphenyl-N-(2,4,-triphenyl-2,3-butadienoyl)urea 
• 108832-81-1 1,3-Dicyclohexyl-1-(2,4,4-triphenyl-buta-2,3-dienoyl)-urea 
• 108832-85-5 6-Benzhydryl-3-cyclohexyl-2-[(Z)-cyclohexylimino]-5-phenyl-2,3-dihydro-[1,3]oxazin-4-one 
• 1450-63-1 1,1,4,4-tetraphenyl-1,3-butadiene 
• 36858-90-9 2,4,4-triphenyl-2,3-butadeonic acid 

Relevant academic research and scientific papers

Intramolecular Cyclizations of Allenic Acylureas and -amides

Allenic acids are found to add to dicyclohexylcarbodiimide affording, in the presence of Et2NH, the 4H-1,3-oxazin-4-ones 5 via 4.Under neutral conditions, they add to diaryl- or pyridyl(cyclohexyl)carbodiimides and triphenylketene imine to give the corresponding tricyclo(5.2.2.0 1,5)undeca-4,4,10-trien-3-ones 7,8,9, and 12.The allenic phenyl ester 13a dimerises, on heating in a (2+2) head-to-head fashion, to 14 but fails to undergo intramolecular Diels-Alder cyclization to 15.