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Lactonization of methyl 4-aryl-5-tosyloxyhexanoate via a phenonium ion

✍ Scribed by Shinji Nagumo; Tomoaki Hisano; Yo-ichiro Kakimoto; Norio Kawahara; Machiko Ono; Tsuneo Furukawa; Sanae Takeda; Hiroyuki Akita

Publisher: Elsevier Science
Year: 1998
Tongue: French
Weight: 224 KB
Volume: 39
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(98)01799-7

No coin nor oath required. For personal study only.

✦ Synopsis

Lactonization of methyl 4-atyl-5-tosyloxy hexanoate 3 via a phenonium ion gave 7 -lactone 4 selectively under thermodynamical conditions while it afforded 6-1actone 5 preferentially under kinetic conditions.

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