The present personalized account highlights reactions of the dianion of 1,1-diphenylacetone and its applications. From a study directed towards the regioselectivity of such reactions a new allene synthesis via allene dianions was found by serendipity. In addition, reactions of allene dianions with various electrophiles have been studied.1 Introduction2 Cyclizations of the Dianion of 1,1-Diphenylacetone2.1 Reaction with Bis(cyclopentadienyl)zirconium Dichloride2.1 Reactions with Dichlorosilanes2.1 Reactions with Difluorosilanes2.1 Reactions with Ketones and Dielectrophiles3 Regioselectivity of Dianion Reactions4 Allene Dianions from Silyl Enol Ethers5 Scope of the Reactions of Allene Dianions6 Reactions of Allene Dianions with Ketones7 Reactions of Allene Dianions with Nitriles8 Conclusions

中文翻译：

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1,1-二苯丙酮双阴离子化学历险记

本个性化报告重点介绍了 1,1-二苯基丙酮的二价阴离子的反应及其应用。从一项针对此类反应的区域选择性的研究中，意外发现了一种通过丙二烯二价阴离子合成的新丙二烯。此外，还研究了丙二烯双阴离子与各种亲电子试剂的反应。1 简介2 1,1-二苯基丙酮双阴离子的环化2.1 与双（环戊二烯基）二氯化锆的反应2.1 与二氯硅烷的反应2.1 与二氟硅烷的反应2.1 与酮类和介电体3 二价阴离子反应的区域选择性4 来自甲硅烷基烯醇醚的丙二烯二价离子5 丙二烯二价阴离子的反应范围6 丙二烯二价阴离子与酮的反应7 丙二烯二价阴离子与腈类的反应8 结论