21544-98-9

Basic information

• Product Name: 4,4-Diphenyl-1-cyclohexene
• Synonyms: 1,1'-(3-Cyclohexene-1,1-diyl)bisbenzene;4,4-Diphenyl-1-cyclohexene
• CAS NO: 21544-98-9
• Molecular Formula: C₁₈H₁₈
• Molecular Weight: 234.34
• Mol File: 21544-98-9.mol
• Article Data: 2

Chemical Properties

• Melting Point: 59-60 °C
• Boiling Point: 323.7±42.0 °C(Predicted)
• Appearance: /
• Density: 1.034±0.06 g/cm3(Predicted)
• CAS DataBase Reference: 4,4-Diphenyl-1-cyclohexene(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4-Diphenyl-1-cyclohexene(21544-98-9)
• EPA Substance Registry System: 4,4-Diphenyl-1-cyclohexene(21544-98-9)

Safety Data

• Hazardous Substances Data: 21544-98-9(Hazardous Substances Data)

Upstream product

• 21195-66-4 4,4-diphenyl-2-cyclohexenone tosylhydrazone 
• 4528-64-7 4,4-diphenyl-2-cyclohexen-1-one 

Downstream Products

• 4528-64-7 4,4-diphenyl-2-cyclohexen-1-one 
• 40529-24-6 5,5-diphenylcyclohex-2-en-1-one 
• 409149-54-8 3-tert-butyl-5,5-diphenylcyclohex-2-enone 

Relevant articles and documents

Chemo- and diastereoselective cyclopropanation of allylic amines and carbamates

A highly chemo- and diastereoselective protocol for the cyclopropanation of tertiary allylic amines with Shi's carbenoid [CF3CO 2ZnCH2I] is described. The high levels of diastereoselectivity observed in these reactions may be attributed to chelation of the nitrogen atom to the zinc reagent, which then transfers a methylene unit to the syn-face of the olefin. Furthermore, a stereodivergent protocol for the cyclopropanation of a range of allylic carbamates has been developed, which provides access to both diastereoisomers of the corresponding cyclopropanes with very high levels of diastereoselectivity: cyclopropanation with the Wittig-Furukawa reagent [Zn(CH2I)2] proceeds under chelation control to give the corresponding syn-product, whilst reaction with Shi's carbenoid proceeds under steric control to give the corresponding anti-cyclopropane, in >95:5 dr in both cases.