๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Benzo[3,4]cyclobuta[1,2-b]thiophene

โœ Scribed by J.W. Barton; D.J. Lapham


Publisher
Elsevier Science
Year
1979
Tongue
French
Weight
119 KB
Volume
20
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

โœฆ Synopsis


The synthesis of thieno[3,2-clcinnoline is described; this compound gives benzo [3,4]cyclobuta[1,2-blthiophene.

vapour phase thermolysis of

The considerable stability of biphenylene, a system containing fused 4n and (4n+2) ITelectron rings, is associated with the fact that its structure corresponds closely to the canonical form (l),l which has a low total bond order, i.e. little cyclobutadiene character, in the four-membered ring.


๐Ÿ“œ SIMILAR VOLUMES


Benzo[3,4 cyclobuta[1,2-b cycloheptatrie
โœ L. Lombardo; D. Wege ๐Ÿ“‚ Article ๐Ÿ“… 1972 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 165 KB

Recent interest in aromatic analogues of biphenylene in which one benzenoid ring is replaced by five membered 6n electron systemsIs prompts us to report our synthesis of the title triene 5 and the derived tropylium salt 11. -The latter is a derivative of biphenylene in which a benzenoid ring is rep

Benzo [3,4]cyclobuta[1,2-b] biphenylene,
โœ J.W. Barton; D.J. Rowe ๐Ÿ“‚ Article ๐Ÿ“… 1983 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 178 KB

## Syntheses of the benzodicinnolines (3) and ( 4), and their vacuum thermolysis to give the title compound (l), are reported. The effects which arise from the fusion of small, strained rings 192 and of potentially

Benzo[3,4]cyclobuta[1,2-d]tropone
โœ Ross K. McCulloch; Dieter Wege ๐Ÿ“‚ Article ๐Ÿ“… 1976 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 182 KB

During recent years, a considerably amount of attention has been devoted to the synthesis of aromatic analogues of biphenylene 1, in which one bensenoid ring is replaced by another (an + 2)x electron system. Compounds which have been prepared include the norbiphenylene anion 2l , benzo[3,4]cyclobuta

Benzo[3,4]cyclobuta[1,2-c]tropone
โœ Luciano Lombardo; Dieter Wege ๐Ÿ“‚ Article ๐Ÿ“… 1975 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 171 KB

Following our synthesis of the benzo[3,4]cyclobutap,2]tropylium cation', we have been actively engaged in investigating routes to the three possible isomeric benzo [3,4]cyclobuta[l,2]troPones 2, 3, and $.

Benzo[3,4]cyclobuta[1,2-a]biphenylene, a
โœ J.W. Barton; R.B. Walker ๐Ÿ“‚ Article ๐Ÿ“… 1978 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 168 KB

Current interest in strained systems resulting from the fusion of more than one small, strained ring onto a benzene nucleus has led to the recent synthesis of molecules such as 1,2,5,6-tetrahydrodicyclobuta[a,c]benzene (l).l