1994
DOI: 10.1016/s0040-4020(01)80739-0 View full text |Buy / Rent full text
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Abstract: A series of 1,3-dipolar cychadditions of mttnchmea with acetylenic dipolaropbiles was studied, wherein factors related to regiosektivity were investigated. Tbe results from mUncbnones with electronically divergent tbioaryl substituents compared with othe.rs beating alkyl substituents suggest that an unsymmetrical transition state structure, fathex than FM0 perturbation, plays a significant role in regioselection. If eclipsing interactions preclude a bigbly ansymmetrical transition state, bowever, then minimizi… Show more

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