Ring closing enyne metathesis: A powerful tool for the synthesis
ChemInform Abstract: Triallylmanganate-Mediated Cyclization of Diyne, Enyne, and Diene. An...
Transcript of ChemInform Abstract: Triallylmanganate-Mediated Cyclization of Diyne, Enyne, and Diene. An...
1998 ring closure reactions
ring closure reactionsO 0130
21 - 046Triallylmanganate-Mediated Cyclization of Diyne, Enyne, and Diene.An Unprecedented Bicyclization Reaction into Bicyclo[5.3.0]decaneand Bicyclo[4.3.0]nonane Skeletons. — Treatment of diynes withtriallylmanganate, generated from MnCl2 and allylmagnesium chloride at0 ◦C, provides bicyclized products containing a seven-membered ring. In thesereactions the terminal substituents of the diyne effect the outcome of thecyclization products. Corresponding reactions of enynes and dienes lead only tocyclized products [mechanisms]. — (TANG, J.; SHINOKUBO, H.; OSHIMA,K.; Organometallics 17 (1998) 3, 290-292; Dep. Mater. Chem., Grad. Sch.Eng., Kyoto Univ., Sakyo, Kyoto 606, Japan; EN)
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