Quantification of sigma and pai electron donating ability of divalent carbon (0) and development of new catalyst utilizing it

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05438
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Organic chemistry
• Research Institution: Nihon University
• Principal Investigator: FUJII Takayoshi 日本大学, 生産工学部, 教授 (00283060)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: カルボン / 0価2配位炭素化合物 / 炭素配位子 / 4電子供与能 / 2核金(I)錯体

Outline of Final Research Achievements

Previously, we have successfully prepared two chalcogen-stabilized carbones. In this work, we have investigated preparation of new types of carbones and their four-electron donor abilities. These results obtained in this work are as follows. (1) We have succeeded in new types of carbones, S(III)→C(0)←S(III) and S(IV)→C(0)←P(III). (2) the electronic structure and proton affinity of carbones were predicted by ab intio calculation. (3) The carbone character demonstrated by forming the corresponding diaurated complexes and this constitutes the first experimental proof of carbones behaving as four-electron donors. (4) The borenium cation was prepared by the use of carbones as monodendate ligand acting as stabilizing σ and π donors. (5) The proton-curated complex of S(III)-stabilized carbon catalyzed the hydroarylation of mesitylene and ethyl propiolate.

Free Research Field

有機元素化学