๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Formation amd reactions of 2,3-dimethylene-2,3-dihydrothiophene

โœ Scribed by Albert M. van Leusen; Keimpe J. van den Berg


Publisher
Elsevier Science
Year
1988
Tongue
French
Weight
197 KB
Volume
29
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.


๐Ÿ“œ SIMILAR VOLUMES


Formation and [4 + 2] cycloaddition reac
โœ Keimpe J. van den Berg; Albert M. van Leusen ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 951 KB

## Abstract 2,3โ€Dimethyleneโ€2,3โ€dihydrothiophene (1), the thiophene analog of oโ€xylylene (oโ€quinodimethane), was generated __in situ__ from the (trialkylammoniomethyl)โ€(trimethylsilylmethyl)thiophene iodides 4 or 5 by fluorideโ€induced 1,4 climination, and was trapped by [4 + 2] cycloadditions with

2,3-Dimethylene-2,3-Dihydrothiophene: Th
โœ Derek J. Chadwick; Andrew Plant ๐Ÿ“‚ Article ๐Ÿ“… 1987 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 151 KB

The hitherto unknown 2,3-dimethylene-2,3\_dihydrothiophene (the thiophene analogue of ortho-xylylene) and a substituted derivative have been prepared in solution and trapped as Diels-Alder adducts in good to excellent yields. ortho-Xylylene l\_ has found wide application in organic chemistry, notabl

Synthesis and cycloaddition reaction of
โœ Tadashi Sasaki; Takashi Manabe; Kenji Hayakawa ๐Ÿ“‚ Article ๐Ÿ“… 1981 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 221 KB

Synthesis of 2,3-dimethylene-7-isopropylidenebenzonorbornene (2) and its cycloaddition reactions with dichloroketene and dienophiles are described. Recently, interesting stereoselectivities in cycloaddition reactions of molecules containing proximal n-bonds have been reported, and the factors contro