由 N-硼烷取代的环状膦酰亚胺 (BCPI) 通过 λ5-oxazaphosphetanes 介导的二氧化碳和异氰酸酯的转化。

IF 2.9 3区化学 Q1 CHEMISTRY, ORGANIC

Organic & Biomolecular Chemistry Pub Date : 2024-11-12 DOI:10.1039/d4ob01565g

Shun Nagai, Sensuke Ogoshi, Yoichi Hoshimoto

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引用次数: 0

摘要

我们在此报告了可靠的证据，证明 λ5-oxazaphosphetane 物种是二氧化碳和异氰酸酯通过与 N-硼烷取代的环状膦酰亚胺（BCPI）反应而发生转化的关键中间体。我们分离并全面鉴定了几种通过 BCPI 与 CO2 或异氰酸酯之间的正规 [2 + 2] 环加成反应制备的 λ5- 恶唑并苯乙烷。这些 λ5-oxazaphosphetane 通过逆环开环反应进行转化，从二氧化碳和异氰酸酯衍生的 λ5-oxazaphosphetane 中得到了异氰酸酯和碳化二亚胺。

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Transformation of CO₂ and isocyanates mediated by N-borane-substituted cyclic phosphine imides (BCPIs) via λ⁵-oxazaphosphetanes.

We herein report reliable evidence that λ⁵-oxazaphosphetane species are a key intermediate in the transformation of CO₂ and isocyanates through their reaction with N-borane-substituted cyclic phosphine imides (BCPIs). We have isolated and fully characterized several λ⁵-oxazaphosphetane species prepared via formal [2 + 2] cycloaddition reactions between BCPIs and CO₂ or isocyanates. The transformation of these λ⁵-oxazaphosphetanes via retro-ring opening reaction afforded an isocyanate and a carbodiimide from the CO₂- and isocyanate-derived λ⁵-oxazaphosphetanes.

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来源期刊

Organic & Biomolecular Chemistry 化学-有机化学

CiteScore

5.50

自引率

9.40%

发文量

1056

审稿时长

1.3 months

期刊介绍： The international home of synthetic, physical and biomolecular organic chemistry.