An unusual restricted rotation around a remote sp2-sp3 carbon-carbon bond in oxaziridines
β Scribed by Derek R. Boyd; Kenneth M. McCombe; W. Brian Jennings
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- French
- Weight
- 126 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
## Barriers to rotation about carbon-carbon single bonds are, in general, so small') that isomers due to restricted rotation cannot be isolated at room
During the syntheses of fluorene derivatives, we have obtained by the following reactions two kinds of rotational isomers which are stable at room temperature in solution. Compound (A) mp 293'C(dec) was first obtained by Pinck and Hllbert 1) on the Michael reaction of 9,9'-blfluorenylidene (1) with
## Abstract **Look, no** **__ortho__** **substituents!** A series of polycycles were prepared by using a threeβcomponent JoulliΓ©βUgi reaction. The rate of rotation about the bond between a highly hindered bridgehead and a phenyl ring with no __ortho__ substituents was measured, and was highly depen