Syntheses and Tandem Diels-Alder Reactivities of 7,7-Diphenyl-[2.2.l]hericene (= 7-(Diphenylmethylidene)-2,3,5,6tetramethylidenebicyclo[2.2.ljheptane) and 7-0xa[2.2. llhericene ( = 2,3,5,6-Tetramethylidenebicyclo[2.2.
The 1H and 31P NMR spectrum of 1-phospha-2,6,7-trioxabicyclo[2.2.1]heptane
โ Scribed by R.D Bertrand; J.G Verkade; D.W White; D Gagnaire; J.B Robert; J Verrier
- Publisher
- Elsevier Science
- Year
- 1970
- Weight
- 546 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0022-2364
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## Abstract Some 2โarylsulphonylamidoโ2โthionoโ5โmethylโ1,3,2โdioxaphospholanes (1), containing two chiral centres, give NMR spectra in which splittings of the ^1^H and ^13^C signals of the 5โmethyl substituent and of the ^31^P signal indicate that they exist in an approximately 70:30% ratio of two