Journal ArticleDOI
Mass spectra and organic analysis—II
TLDR
The mass spectra of a number of phenyl ethers in which the oxygen atom forms part of a heterocyclic ring have been measured and it is suggested that ions that are stabilized by the operation of the so-called "ortho-effect" are generally cyclic as mentioned in this paper.About:
This article is published in Tetrahedron.The article was published on 1964-01-01. It has received 122 citations till now. The article focuses on the topics: Mass spectrum & Fragmentation (mass spectrometry).read more
Citations
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Journal ArticleDOI
Natural and synthetic chromenes, fused chromenes, and versatility of dihydrobenzo[h]chromenes in organic synthesis.
Ramendra Pratap,Vishnu Ji Ram +1 more
Journal ArticleDOI
Massenspektrometrie und IHRE anwendung auf strukturelle und stereochemische probleme—LXVII
TL;DR: In this article, the Zerfallsreaktion organischer Molekule unter Elektronenbeschuss, die formal einer retro-Diels-Alder-Reaktion entspricht, wird diskutiert.
Journal ArticleDOI
Chromatographic analysis of unsaponifiable compounds of olive oils and fat-containing foods.
TL;DR: Several analytical cases of the main classes of components of the unsaponifiable matter obtained from olive oils or food matrices are reported, especially capillary gas chromatography.
Journal ArticleDOI
Alkaloids of Piper longum Linn—I : Structure and synthesis of piperlongumine and piperlonguminine
Asima Chatterjee,C.P. Dutta +1 more
TL;DR: Piperlongumine and piperlonguminine are shown to be N-(3,4,5-trimethoxycinnamoyl)-Δ5-piperidin-2-one and isobutylamide of piperic acid respectively.
Book ChapterDOI
Some newer aspects of mass spectrometric ortho effects
TL;DR: In this paper, a review of electron impact induced ortho effects is presented, where the most important topics are hydrogen transfer and especially the question of concerted or multistep reaction, the influence of the structure on the selectivity of hydrogen migration via higher-membered transition states, the apparent cleavage of carbon/heteroatom bonds induced by hydrogen transfer, the redox processes which formally correspond to photochemical transformations, but which are completely different according to the reaction mechanisms, the different types of cyclization reactions, and the field of exchange processes preceding or accompanying unimolecular
References
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Journal ArticleDOI
Mass Spectrometric Analysis. Aromatic Acids and Esters
Fred W. McLafferty,R. S. Gohike +1 more
Journal ArticleDOI
Structures of aplysin and aplysinol, naturally occurring bromo-compounds
S. Yamamura,Yoko Hirata +1 more
TL;DR: The structures of aplysin and aply sinol, new sesquiterpenoid aromatic bromo-compounds isolated from Aplysia kurodai, are elucidated and biogenesis of a plysin, debromoaplysin and a Plysinol is discussed.
Related Papers (5)
The mass spectra of some naturally occurring oxygen heterocycles and related compounds
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