53267-65-5

Basic information

• Product Name: toluene-4-sulfonic acid cyclohexa-2,5-dienylmethyl ester
• Synonyms: toluene-4-sulfonic acid cyclohexa-2,5-dienylmethyl ester
• CAS NO: 53267-65-5
• Molecular Weight: 264.345
• Mol File: 53267-65-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: toluene-4-sulfonic acid cyclohexa-2,5-dienylmethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: toluene-4-sulfonic acid cyclohexa-2,5-dienylmethyl ester(53267-65-5)
• EPA Substance Registry System: toluene-4-sulfonic acid cyclohexa-2,5-dienylmethyl ester(53267-65-5)

Safety Data

• Hazardous Substances Data: 53267-65-5(Hazardous Substances Data)

Upstream product

• 4794-04-1 1,4-dihydrobenzoic acid 
• 25372-69-4 cyclohexa-2,5-dienyl-methanol 
• 98-59-9 p-toluenesulfonyl chloride 

Downstream Products

• 544-25-2 Cyclohepta-1,3,5-triene 
• 108-88-3 toluene 
• 53267-66-6 2,5-Cyclohexadien-1-ylmethylbromid 

Relevant articles and documents

Regioselective Ring Opening in Substituted Benzocyclopropenes. An Alternative or Complementary Mechanism for Electrophilic Substitution Involving Attack at a ? Bond

2-Methylbenzocyclopropene (5) reacts with bromine, iodine, and HCl to give the m-xylenes 12a,c,d as the major products, whereas it reacts with silver nitrate in the presence of ethanol and aniline to give the o-xylenes 11e,f as the major products.Similarly, 3-methylbenzocyclopropene (10) gives mainly m-xylenes 14a,c,d with halogens and HCl and gives p-xylenes 13e,f with silver nitrate and ethanol or aniline.Cyclopropabenzocyclobutene (15) also gives different products with halogens and silver nitrate, but in this case HCl gives the same type of product as the silver ion.The difference in electrophilic behavior of 5, 10, and 15 toward the two types of reagents is suggested to arise from attack of the silver ion (and the proton in the case of 15) on the ? electrons of the cyclopropyl ring.