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Intramolecular cyclizations of acetylenic grignard reagents

โœ Scribed by Herman G. Richey Jr.; Alan M. Rothman

Publisher
Elsevier Science
Year
1968
Tongue
French
Weight
207 KB
Volume
9
Category
Article
ISSN
0040-4039

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๐Ÿ“œ SIMILAR VOLUMES

Intramolecular cyclization of an allenic
Intramolecular cyclization of an allenic grignard reagent
โœ Herman G. Richey Jr.; Walter C. Kossa Jr. ๐Ÿ“‚ Article ๐Ÿ“… 1969 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 102 KB

A ready intramolecular addition of the Grignard function of the 3,4-pentadien-l-y1 Grignard reagent (2) to an allenic double bond furnished the l-cyclopropylvinyl Grignard reagent (5). \* The structure of this new compound is consistent with its elemental analysis and ir and nmr spectra.

Cyclizations of phenyl substituted alken
Cyclizations of phenyl substituted alkenyl grignard reagents
โœ Herman G. Richey Jr.; Harry S. Veale ๐Ÿ“‚ Article ๐Ÿ“… 1975 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 235 KB

Cyclizatlon of unsaturated Grignard reagents (or the reverse reactlon, ring cleavage of strained cyclx Grlgnard reagents) has been studled m a range of systems, 1-12 but the detalled mechanism has yet to be establlshed 13 We earlier reported that cycllzatlon of & 1s retarded ~a.

Intramolecular carbometallation of grign
Intramolecular carbometallation of grignard reagents having the terminal trimethylsilylacetylene group
โœ Sadao Fujikura; Masaharu Inoue; Kiitiro Utimoto; Hitosi Nozaki ๐Ÿ“‚ Article ๐Ÿ“… 1984 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 193 KB

Reaction of 6-bromo-l-trimethylsilyl-l-hexyne with magnesium affords the corresponding Grignard reagent whose C-Mg bond intramolecularly adds to the trimethylsilylacetylene moiety in 5-Exo-Dig manner and suprafacially. The reaction can be applied to the synthesis of some cycloalkanes having stereode