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Heteroannulenes excessive

Heteroannulenes electrophilic reactions, 7, 726 tr-excessive synthesis, 7, 727 nucleophilic reactions, 7, 727 Hetero[l IJannulenes structure, 7, 715 Hetero[ 12]annulenes pyridine-like methano-bridged, 7, 715 Hetero[ 13]annulenes unrestricted structure, 7, 716... [Pg.644]

Given the availability of a suitable chromophore, the use of light offers the mildest possible thermal environment in which to effect a synthetic transformation insofar as photoinduced processes may be activated at temperatures well below 0 °C. Not unexpectedly then, one finds the photosynthetic procedure to be, thus far, the only one which has been successfully applied to the construction of the relatively sensitive parent (unrestricted) 77- excessive heteroannulenes as shown in Scheme 9a. Similarly, exposure of the tetracyclic azides depicted in Scheme 9b to low-pressure mercury irradiation leads to deazotation and the formation of the pyridine-like 14- and 18-membered parents (49) and (75). [Pg.727]

This volume contains two articles which bring up to date older reviews in the Series. Progress in the chemistry of the 1,3-oxazines since they were covered by Eckstein and Urbanski in Volume 2 (1963) is described by the same authors. Acheson and Elmore review reactions of acetylenecarboxylic esters with nitrogen heterocycles, which have been the subject of much concentrated research in the years since Acheson s article in Volume 1. The review on indolizines (Swinboume, Hunt, and Klinkert) also concentrates on the advances of the last IS years and up-dates reviews published elsewhere. Anastassiou and Kasmai provide a critical account of the V-excessive heteroannulenes, and Fletcher and Siegrist deal authoritatively with the olefin-forming condensations of anils with methyl groups, the Anil Synthesis. ... [Pg.510]


See other pages where Heteroannulenes excessive is mentioned: [Pg.719]    [Pg.719]    [Pg.55]    [Pg.57]    [Pg.59]    [Pg.61]    [Pg.63]    [Pg.65]    [Pg.67]    [Pg.71]    [Pg.73]    [Pg.75]    [Pg.77]    [Pg.79]    [Pg.81]    [Pg.83]    [Pg.85]    [Pg.87]    [Pg.89]    [Pg.91]    [Pg.93]    [Pg.95]    [Pg.97]    [Pg.101]    [Pg.506]   
See also in sourсe #XX -- [ Pg.23 , Pg.55 ]

See also in sourсe #XX -- [ Pg.23 , Pg.55 ]

See also in sourсe #XX -- [ Pg.23 , Pg.55 ]




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77-Excessive heteroannulenes, medium-large

Heteroannulenes

Heteroannulenes medium excessive

Ir -Excessive heteroannulenes, medium-large and

Ir-Excessive heteroannulenes, medium-large

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