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廖启华

金虫 (小有名气)

[求助] 这一小段话求翻译

In this transformation,
initial electrophilic π -complexation of a carbon–carbon double bond leads to electron deficiency at the
carbon site which is vicinal to the C Sn bond. Stabilization of the developing β -carbocation occurs
with alignment of the C Sn single bond, and orbital overlap provides a description of a non-classical
cation in which the stannyl substituent carries a substantial fraction of the positive charge. Formation of a
carbon–carbon double bond proceeds with loss of the stannyl cation, and thus, electrophilic substitution
of the tin substituent has taken place with allylic transposition.
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buddykongs

木虫 (正式写手)

王二胖

【答案】应助回帖

在这次转变中,碳碳双键初始的亲电π-络合作用使得临近于C-Sn键的碳上电子缺失。形成的β-碳正离子通过与C-Sn单键共线得到稳化,轨道的重叠展现出一种非经典碳正离子的形式,其中甲锡烷基取代基分散了部分正电荷。碳碳双键的形成伴随着甲锡烷基阳离子的损耗,因此,在烯丙基转化中已经发生了锡取代基的亲电取代。
做理想的自己,汪汪汪
2楼2013-03-27 12:00:08
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hookhans

铁杆木虫 (著名写手)

Farmer

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廖启华: 金币+10, 翻译EPI+1, ★★★★★最佳答案, 3Q 2013-03-27 16:58:25
直译, 意思正确, 中文语言有待斟酌,谨供参考:
在这一转变中,开始时碳碳双键的亲电性π-络合作用导致紧邻C-Sn键的碳缺失电子。形成中的β-碳正离子的稳定化是和C-Sn单键的调变共同进行的. 而轨道重叠提供一种非经典阳离子描述方式,在这一描述方式中, 甲锡烷基取代基带很大一部份的正电荷。碳碳双键的形成是通过失去甲锡烷基阳离子进行的,因此,锡取代基的亲电取代反应可以通过烯丙基位转移来发生.
where-there-is-a-will-there-is-a-way.
3楼2013-03-27 12:59:57
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