Observation of reactive o-quinodimethanes by flow NMR
Journal Article
·
· J. Am. Chem. Soc.; (United States)
The detection of 1,2-dimethylene-1,2-dihydronaphthalene (2) and o-xylylene (1) in the presence of its stable dimers by the technique of flow /sup 1/H NMR is reported. The NMR flow apparatus used for this study was patterned after that of Fyfe; however, the apparatus was designed so that flow rates could be varied by changing the transfer and detector volumes. It was determined by uv-vis spectrometry that 2 is about 100 times less reactive than 1, and it was even possible to obtain the /sup 1/H NMR spectrum of 2 before it dimerizes. The high reactivity of 1 made it impossible to obtain its spectrum in the absence of its dimer. 27 references, 1 figure.
- Research Organization:
- Iowa State Univ., Ames (USA)
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6187756
- Journal Information:
- J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 110:19; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Observation by flow sup 1 H NMR and dimerization kinetics and products of reactive ortho-quinodimethanes and benzocyclobutadiene
Direct observation of O-xylylene (o-quinodimethane) in solution. Dimerization kinetics of some o-quinodimethanes. II. Kinetic and product studies on the dimerization of. cap alpha. -methyl-substituted of o-quinodimethanes. III. Direct observation of 1,2-napthoquinodimethane and 9,10-phenanthroquinodimethane. Dimerization kinetics of resonance-stabilized o-quinodimethanes
(Dimerization of o-quinodimethanes)
Technical Report
·
Fri Sep 21 00:00:00 EDT 1990
·
OSTI ID:6562402
Direct observation of O-xylylene (o-quinodimethane) in solution. Dimerization kinetics of some o-quinodimethanes. II. Kinetic and product studies on the dimerization of. cap alpha. -methyl-substituted of o-quinodimethanes. III. Direct observation of 1,2-napthoquinodimethane and 9,10-phenanthroquinodimethane. Dimerization kinetics of resonance-stabilized o-quinodimethanes
Thesis/Dissertation
·
Wed Dec 31 23:00:00 EST 1986
·
OSTI ID:5638167
(Dimerization of o-quinodimethanes)
Technical Report
·
Mon Jun 01 00:00:00 EDT 1987
·
OSTI ID:6322767