Abstract

Methods for the in situ generation of dichloroindium hydride (HInCl 2) via the reduction of InCl 3 with various reducing agents, such as tributyltin h ydride (tributylstannane; Bu 3SnH), diisobutylaluminum hydride (DIBAL-H), triethylsilane (Et 3SiH), lithium aminoborohydride (LAB), and sodium borohydride (NaBH 4), in various solvents are reviewed and compared. T he use of the InCl 3/NaBH 4 system in addition to forming HInCl 2, also generated borane that was trapped as BH3-tetrahydrofuran (THF). Carefully controlling the a ctivity of these reducing agents allows for the selective and/or partial reduction o f multi-functionalized compounds containing nitriles and halogens.

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