Synthesis of cyclopentenyl and cyclohexenyl ketones via [3 ＋ 2] and [4 ＋ 2] annulations of 1,2-allenic ketones

In this paper, an efficient synthesis of cyclopentenyl ketones and cyclohexenyl ketones through tertiary phosphine catalyzed [3 ＋ 2] and [4 ＋ 2] annulations of 1,2-allenic ketones with activated alkenes has been developed. Compared with published synthetic methods on cyclopentenyl ketones and cycloh...

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Bibliographic Details
Published in:Chinese chemical letters 2014, Vol.25 (1), p.55-57
Main Authors: Cui, Liang-Yan, Guo, Sheng-Hai, Li, Bin, Zhang, Xin-Ying, Fan, Xue-Sen
Format: Article
Language:English
Subjects:
1,2-Allenic ketone
Cyclohexenyl ketone
Cyclopentenyl ketone
Phosphine-catalyzed annulation
丙二烯
反应条件
叔膦
合成方法
烯基
环己酮
环戊酮
酮类
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Summary:In this paper, an efficient synthesis of cyclopentenyl ketones and cyclohexenyl ketones through tertiary phosphine catalyzed [3 ＋ 2] and [4 ＋ 2] annulations of 1,2-allenic ketones with activated alkenes has been developed. Compared with published synthetic methods on cyclopentenyl ketones and cyclohexenyl ketones, the protocols developed in this paper have the advantages such as readily available starting materials, mild reaction conditions and high efficiency.
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2013.10.008