Cyclic transformations of n-gons and related quadratic forms
β Scribed by Philip J. Davis
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 721 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0024-3795
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Mass spectra of seven related N-heterocyclics, introduced by direct exposure probe, were determined in electron impact (EI) and positive-and negative-ion chemical ionization (PCI and NCI) modes. Proton adducts were the predominant molecular ion species in the EI and PCI modes. In addition, a variety
## Abstract magnified image Various aldehyde and ketone acylhydrazones are synthesized and, under acylating conditions, cyclized into 3βacylβ1,3,4βoxadiazolines. The scope and limitations of these cyclizations and the possible side reactions (__e.g__. formation of the openβchain __N,O__βacylhydraz