Mononuclear iron complex and organic synthesis reaction using same

Abstract

A mononuclear iron bivalent complex having iron-silicon bonds, which is represented by formula (1), can exhibit an excellent catalytic activity in at least one reaction selected from three reactions, i.e., a hydrosilylation reaction, a hydrogenation reaction and a reaction for reducing a carbonyl compound. (In the formula, R1 to R6 independently represent a hydrogen atom, an alkyl group which may be substituted by X, or the like; X represents a halogen atom, or the like; L1 represents at least one two-electron ligand selected from an isonitrile ligand, an amine ligand, an imine ligand, a nitrogenated heterocyclic ring, a phosphine ligand, a phosphite ligand and a sulfide ligand, wherein, when multiple L1's are present, two L1's may be bonded to each other; L2 represents a two-electron ligand that is different from a CO ligand or the above-mentioned L1, wherein, when multiple L2's are present, two L2's may be bonded to each other; and m1 represents an integer of 1 to 4 and m2 represents an integer of 0 to 3, wherein the sum total of m1 and m2 (i.e., m1 + m2) satisfies 3 or 4.)

Description

technical field [0001] The present invention relates to a mononuclear iron complex having an iron-silicon bond, and more specifically, to a mononuclear iron complex having catalytic activity in at least one of industrially useful hydrosilylation reactions, hydrogenation reactions, and reduction reactions of carbonyl compounds mononuclear iron complex. Background technique [0002] A hydrosilylation reaction in which an Si-H functional compound is added to a compound having a carbon-carbon double bond or a carbon-carbon triple bond is a useful means for synthesizing organosilicon compounds and is an industrially important synthesis reaction. [0003] Pt, Pd, and Rh compounds are known as catalysts for this hydrosilylation reaction, and among them, Pt compounds typified by Speier catalyst and Karstedt catalyst are the most used catalysts. [0004] As a problem in the reaction using a Pt compound as a catalyst, a side reaction in which an olefin internal rearrangement occurs w...

AI Technical Summary

Problems solved by technology

However, in the reaction using this complex, there are problems such as the low reactivity to internal olefins, and the use of Na mercury, which is composed of water-restricted sodium and highly toxic mercury, and requires careful handling when synthesizing the complex. Qi (or use water-restricted NaBEt 3 H), the stability of the coordination compound itself is low, and special equipment such as a glove box is required for handling. In addition, it must be stored under a nitrogen atmosphere

[0021] A large number of methods using hydrosilane compounds and methylhydrogenpolysiloxane, which are stable in air and easy to handle, are reported as reducing agents, but the reaction requires the addition of strong acid or Lewis acid, and expensive noble metal catalysts

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