alkoxycyclization

名词 n.

英文释义

名词 n.
  1. A reaction in which the addition of an alkoxy group to one carbon atom of a double or triple bond is accompanied by cyclization
    — A transition state similar to TS 34 – 33 has been proposed in the reaction of cyclopropyl gold(I) carbenes generated by retro-Buchner reaction of 7-cyclopropyl 1,3,5-cycloheptatrienes. 79 Gold(I) complexes are able to catalyze the addition of amines, alcohols, or water to 1, n -enynes affording products of amino-, alkoxy-, or hydroxycyclization under much milder conditions than other metal catalysts. 26, 32, 33, 62, 80 − 82 These additions are stereospecific, as illustrated by the alkoxycyclization of diastereomeric enynes 1m and 1h, and proceed via opening of cyclopropyl gold(I) carbene intermediates 35 by attack of the nucleophile to the cyclopropane ring (Scheme 11 ).

词形变化

alkoxycyclizations plural

词源

Etymology tree
Akkadian 𒎎𒋆𒁉𒍣𒁕 (guḫlum)bor.
Aramaic כוחלא (kuḥlā)bor.
Arabic كُحْل (kuḥl)
Andalusian Arabic اَلْكُحُول (al-kuḥūl)bor.
Medieval Latin alcoholder.
Middle English alcofol
English alcohol
English alk-
Proto-Indo-European *h₂eḱ-der.?
Ancient Greek ὀξύς (oxús)
Proto-Indo-European *ǵenh₁-
Proto-Indo-European *-os
Proto-Indo-European *ǵénh₁os
Proto-Hellenic *génos
Ancient Greek γένος (génos)
French oxygènebor.
English oxygen
English -oxy
English alkoxy
Proto-Indo-European *kʷel-
Proto-Indo-European *kʷékʷlos
Ancient Greek κῠ́κλος (kŭ́klos)der.
Late Latin cyclusbor.
Middle English cicle
English cycle
Proto-Indo-European *-id-
Proto-Indo-European *-yéti
Proto-Indo-European *-idyéti
Proto-Hellenic *-íďďō
Ancient Greek -ῐ́ζω (-ĭ́zō)bor.
Late Latin -izōder.
Middle French -iserbor.
Middle English -isen
English -ize
English cyclize
Proto-Indo-European *-tis
Proto-Indo-European *-Hō
Proto-Indo-European *-tiHō
Proto-Italic *-tiō
Latin -tiō
Latin -ātiōlbor.
Old French -ationbor.
Middle English -acioun
English -ation
English cyclization
English alkoxycyclization
From alkoxy + cyclization.
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