121642-39-5

Basic information

• Product Name: (E)-cis-4-<1-hydroxy-2-(t-butyl)cyclohexyl>but-2-enoic acid
• CAS NO: 121642-39-5
• Molecular Weight: 240.343
• Mol File: 121642-39-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: (E)-cis-4-<1-hydroxy-2-(t-butyl)cyclohexyl>but-2-enoic acid(CAS DataBase Reference)
• NIST Chemistry Reference: (E)-cis-4-<1-hydroxy-2-(t-butyl)cyclohexyl>but-2-enoic acid(121642-39-5)
• EPA Substance Registry System: (E)-cis-4-<1-hydroxy-2-(t-butyl)cyclohexyl>but-2-enoic acid(121642-39-5)

Safety Data

• Hazardous Substances Data: 121642-39-5(Hazardous Substances Data)

Upstream product

• 107-93-7 (E)-but-2-enoic acid 
• 1728-46-7 2-tert-butylcyclohexanone 

Relevant articles and documents

Unsaturated Carboxylic Acid Dienolates. Reaction with Substituted Cyclohexanones and Unsubstituted Cycloalkanones. Regio- and Stereoselectivity

Regio- and stereo-selectivities for the reaction of lithium dienolates derived from crotonic and dimethylacrylic acids with substituted cyclohexanones (4)-(6) are found to depend on reaction time and temperature. α-Adducts resulting from equatorial attack predominate after a short time at -70 deg C, but axial approach and γ-addition are favoured by longer reaction time and higher temperature.Inversion of axial/equatorial stereoselectivity is observed for some cyclohexanones.For unsubstituted cycloalkanones, regioselectivity is dependent on ring size.This effect can be explained on the basis of Brown's "I-strain" rationalization.For C5-C12 ketones, γ-adducts are found when reactions are carried out above room temperature, but at 0 deg C, C5, C6, and C12 cycloalkanones yield α-isomers whereas mesocyclic ketones afford γ-isomers.