✦ LIBER ✦

Photoisomerization of allyl ethers: syntheses of vinyl ethers

✍ Scribed by Satish C Gupta; Mohamad Yusuf; Somesh Sharma; Surinder Arora

Publisher: Elsevier Science
Year: 2002
Tongue: French
Weight: 174 KB
Volume: 43
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(02)01366-7

No coin nor oath required. For personal study only.

✦ Synopsis

Intramolecular hydrogen-abstractions initiated by the photoexcited C O group have found several synthetic applications. 1 Ring systems containing 3-n atoms, spiropyrans, spirobenzofurans, lactams and some other systems have been synthesized using this method. These abstractions have also been investigated using steroidal moieties 2 and a series of Oalkylesters of 4-benzoylbenzoic acids 3 to determine the relationship between the chain length and the site of abstraction. In this communication, we report a facile synthesis of vinyl ethers through the application of hydrogen abstractions.

📜 SIMILAR VOLUMES

A novel synthesis of allyl vinyl ethers

✍ J.C. Gilbert; U. Weerasooriya; B. Wiechman; L. Ho 📂 Article 📅 1980 🏛 Elsevier Science 🌐 French ⚖ 251 KB

Base-promoted reaction of dimethyt d~usomet~~zp~sp~~te (21 with aZipkatic ketones -in the presence of aZlylie alcohols affords aldehydio atlyZ vi?fyZ ethers (:I. Ally1 vinyl ethers, 4, are of interest because they undergo the Claisen rearrangement, 2 a sequence that accomplishes net a-allylation of

Relative thermodynamic stabilities of al

Relative thermodynamic stabilities of allyl vinyl and propenyl vinyl ethers

✍ Esko Taskinen; Marja Laine 📂 Article 📅 1997 🏛 Springer 🌐 English ⚖ 496 KB

Palladium(II)-catalyzed claisen rearrang

Palladium(II)-catalyzed claisen rearrangement of allyl vinyl ethers

✍ J.L van der Baan; F Bickelhaupt 📂 Article 📅 1986 🏛 Elsevier Science 🌐 French ⚖ 258 KB

The Claisen rearrangement of ally1 vinyl ethers is catalyzed by PdCQ(CH3CN)Z. provided that alkyl substituents protect the vinyl ether double bond from coordination by the metal catalyst. [3,3]Sigmatropic rearrangements are very useful for the formation of C-C, C-O, C-N and C-S bonds. Besides the cl

Catalysis of the Claisen Rearrangement o

Catalysis of the Claisen Rearrangement of Aliphatic Allyl Vinyl Ethers

✍ Martin Hiersemann; Lars Abraham 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 443 KB 👁 2 views

Selective cleavage of allyl ethers

✍ Jinhwa Lee; Jin Kun Cha 📂 Article 📅 1996 🏛 Elsevier Science 🌐 French ⚖ 185 KB

ChemInform Abstract: Catalytic Asymmetri

ChemInform Abstract: Catalytic Asymmetric Claisen Rearrangement of Unactivated Allyl Vinyl Ethers.

✍ Maryll E. Geherty; Robert D. Dura; Scott G. Nelson 📂 Article 📅 2011 🏛 John Wiley and Sons ⚖ 48 KB 👁 2 views

## Abstract The presence of the free hydroxy‐group in the chiral catalyst is crucial.