Zobrazeno 1 - 10
of 33
pro vyhledávání: '"James C. Barborak"'
Publikováno v:
Magnetic Resonance in Chemistry. 38:932-936
Dynamic two-dimensional 1H and 13C NMR studies of the conformationally restricted amide N-(1-naphthoyl)-cis-2,6-dimethylpiperidine reveal correlated rotation about the aryl–CO and amide bonds. The naphthalene and piperidine rings are tightly meshed
Publikováno v:
Journal of the American Chemical Society. 120:1489-1493
The effect of deuterium substitution on the positional equilibrium and rate of the Cope rearrangement in barbaralone-d1 has been investigated by 1H and 13C dynamic NMR spectroscopy. Deuterium favors the allylic position over the cyclopropyl position.
Autor:
Malcolm D. E. Forbes, Kenneth D. Jordan, Dana Nachtigallova, James C. Barborak, Shiyamalie R. Ruberu
Publikováno v:
Journal of the American Chemical Society. 117:3946-3951
Publikováno v:
Macromolecules. 27:1020-1026
The photodegradation of two alternating R-CO copolymers (R= p-tert-butylstyrenyl and exo-norbornyl) was studied using time-resolved EPR spectroscopy at two different frequencies, X-band (9.5 GHz) and Q-band (35.1 GHz), and by product analysis. For th
Publikováno v:
Journal of the American Chemical Society. 133(25)
Conjugated polymers possessing a poly(2,5-dimethylene-2,5-dihydrofuran) backbone were prepared through postpolymerization reaction of styrenic polyketones with bromine in one-pot reactions. The modification is proposed to proceed via condensation of
Autor:
Barbara Milani, Maurice Brookhart, James C. Barborak, Mark I. Wagner, Francis C. Rix, Michael J. Rachita
Publikováno v:
Dalton Transactions. :8977
A mechanistic interpretation of the [(1,10-phenanthroline)Pd(CH(3))(CH(3)CN)](+)[BArF](-) (1a) and [(2,2'-bipyridine)Pd(CH(3))(CH(3)CN)](+)[BArF](-) (1b) (BArF = 3,5-(CF(3))(2)-C(6)H(3)) catalyzed perfectly alternating copolymerization of styrenes wi
Publikováno v:
Journal of the American Chemical Society. 114:5894-5895
Several Pd(II) catalyst systems have been reported which effect prefectly alternating copolymerization of olefins with carbon monoxide to yield polyketones [C(O)CH(R)CH{sub 2}]{sub n}. There has been increasing interest in these polymers, particularl
Publikováno v:
Journal of the American Chemical Society. 120:2208-2208
Autor:
Francis C. Rix, Michael J. Rachita, Mark I. Wagner, Maurice Brookhart, Barbara Milani, James C. Barborak
Publikováno v:
Dalton Transactions: An International Journal of Inorganic Chemistry; Oct2009, Vol. 2009 Issue 41, p8977-8992, 16p
Autor:
Diana Khoury, Paul von Ragué Schleyer, James C. Barborak, William F. Smith, Christopher Wyrick, E. C. R. Smith, Wilhelm F. Maier
Publikováno v:
The Journal of Organic Chemistry. 44:4761-4766