期刊
ACS CATALYSIS
卷 4, 期 8, 页码 2770-2775出版社
AMER CHEMICAL SOC
DOI: 10.1021/cs500446d
关键词
gold catalysis; hydroalkoxylation; counterion effect; kinetics; reaction mechanism
资金
- state of Baden-Wurttemberg
Using gold(I)-catalyzed hydroalkoxylation of alkynes as a model reaction with a well-known mechanism, a systematic experimental study was conducted to disclose the influence of the counterion X- of a gold catalyst LAuNCMe+ X- on every step of the catalytic cycle. The overall ion effect is determined as a superposition of several effects, operating on different steps of the reaction mechanism. All effects were explained from a position of hydrogen bonding, coordination chemistry at gold, and affinity for a proton.
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