70838-82-3Relevant academic research and scientific papers
Palladium-Catalyzed Carbon Isotope Exchange on Aliphatic and Benzoic Acid Chlorides
Gauthier, Donald R.,Rivera, Nelo R.,Yang, Haifeng,Schultz, Danielle M.,Shultz, C. Scott
supporting information, p. 15596 - 15600 (2018/11/23)
An operationally simple protocol for a palladium-catalyzed 13CO and 14CO exchange with activated aliphatic and benzoic carbonyls is presented. Several 13C and 14C building blocks, natural product derivatives, an
Thermal isomerization of benzocyclobutene
Chapman, Orville L.,Tsou, Uh-Po Eric,Johnson, Jeffery W.
, p. 553 - 559 (2007/10/02)
Thermolysis of benzocyclobutene 13CH2, 99percent gives styrene labeled in the β (48percent), ortho (30percent), α (14percent), meta (4percent), and para (4percent) positions.The major labels (β and ortho) are consistent with a mechanism involving interconversions of the isomeric tolylmethylenes and the methylcycloheptatrienes.This mechanism also involves interconversion of o-tolylmethylene with o-xylylene and p-tolylmethylene with p-xylylene.A minor mechanism produces 25percent of styrene.This mechanism involves cleavage of the aryl carbon to the methylene carbon bond in benzocyclobutene followed by hydrogen transfer to produce styrene.Thermolysis of p-xylylene produced from paracyclophane gives styrene (55percent), p-xylene (31percent), benzocyclobutene (4percent), benzene (4percent), and toluene (3percent).Thermolysis of metacyclophane gives styrene (18percent), p-xylene (25percent), m-xylene (3percent), benzocyclobutene (1percent), benzene (7percent), and toluene (22percent).
