82721-36-6

Basic information

• Product Name: 2,2',3,3'-tetrahydro-1H,1'H-1,1'-biindene
• Synonyms: 2,2',3,3'-tetrahydro-1H,1'H-1,1'-biindene
• CAS NO: 82721-36-6
• Molecular Weight: 234.341
• Mol File: 82721-36-6.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 2,2',3,3'-tetrahydro-1H,1'H-1,1'-biindene(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2',3,3'-tetrahydro-1H,1'H-1,1'-biindene(82721-36-6)
• EPA Substance Registry System: 2,2',3,3'-tetrahydro-1H,1'H-1,1'-biindene(82721-36-6)

Safety Data

• Hazardous Substances Data: 82721-36-6(Hazardous Substances Data)

Upstream product

• 496-11-7 INDANE 
• 65-85-0 benzoic acid 
• 101749-61-5 tri-sec-butylindium 
• 55003-52-6 1-indanyl radical 

Relevant articles and documents

Cobalt-catalyzed oxidative esterification of allylic/benzylic C(sp3)–H bonds

A protocol for the cobalt-catalyzed oxidative esterification of allylic/benzylic C(sp3)–H bonds with carboxylic acids was developed in this work. Mechanistic studies revealed that C(sp3)–H bond activation in the hydrocarbon was the turnover-limiting step and the in-situ formed [Co(III)]Ot-Bu did not engage in hydrogen atom abstraction (HAA) of a C–H bond. This protocol was successfully incorporated into a synthetic pathway to β-damascenone that avoided the use of NBS.

Disproportionation-Recombination Rate Ratios for Hydroaromatic Radicals

Relative rates for radical disproportionation (R. + R'. RH + R'd) and recombination (R. + R'. RR') have been determined in the liquid phase at 150 deg C for a series of reactions involving resonance-stabilized hydroaromatic radicals.Self-reactions were studied for the 1-tetralyl, 1-indanyl, 9,10-dihydro-9-phenanthryl, and 9,10-dihydro-9-anthryl radicals.Four cross-radical reactions involving benzyl, diphenylmethyl, and 1-tetralyl radical as H-atom acceptors were also examined.Rate constant ratios (kd/kr) span the range of 1.34 for the self-reaction of 9,10- dihydro-9-phenanthryl radicals to 0.05 for the self-reaction of 9,10-dihydro-9-anthryl radicals.When disproportionation reaction exothermicity is sufficiently small, -ΔHd -1 (210 kJ mol-1), disproportionation rate constants decrease with decreasing exothermicity.A fit of liquid-phase data yields ln (kd/kr) per H atom = -10.1 - 0.163 ΔHd (kcal mol-1).