98453-65-7

Upstream product

• 4521-22-6 4-(4-methylphenyl)butyric acid 
• 108-88-3 toluene 
• 98453-59-9 1,2,3,4-Tetrahydro-4,4,6-trimethyl-1-oxo-naphthalene 
• 22184-00-5 2-(methyl-5-(4-methylphenyl))-2-pentanol 
• 22824-34-6 1,2,3,4-tetrahydro-1,1,7-trimethyl-naphthalene 
• 24306-23-8 methyl 4-(4-methylphenyl)butanoate 
• 4619-20-9 3-(4-methylbenzoyl)propionic acid 
• 78661-05-9 4,4,6-trimethyl-1(4H)-naphthalenone 
• 1576-35-8 toluene-4-sulfonic acid hydrazide 

Relevant academic research and scientific papers

SUBSTITUENT EFFECTS ON THE RATE OF CARBENE FORMATION BY THE PYROLYSIS OF RIGID ARYL SUBSTITUTED DIAZOMETHANES

Rate constants for the pyrolysis of 1-diazo-4,4-dimethyl-1,4-dihydronaphtalenes, 4a-4e, have been measured in methanol:6percent triethylamine.In contrast to non-rigid cases, like diphenyldiazomethanes, where all para substituents show a rate increase compared to hydrogen, these rates show a linear Hammett correlation for all para substituents with ?+ = -0.84.This observation is rationalized by a non-linear process for loss of nitrogen leading directly to the ground-state singlet of the carbene, 17.This carbene is then trapped to give ether 11.