Iron-Catalyzed Tunable and Site-Selective Olefin Transposition
作者:Xiaolong Yu、Haonan Zhao、Ping Li、Ming Joo Koh
DOI:10.1021/jacs.0c08631
日期:2020.10.21
earth-abundant iron-based complex, a base and a boryl compound promote efficient and controllable alkene transposition. Mechanistic investigations reveal that these processes likely involve in situ formation of an iron-hydride species which promotes olefin isomerization through sequential olefin insertion/β-hydride elimination. Through this strategy, regiodivergent access to different products from
CC 双键的催化异构化是必不可少的化学转化,用于提供更高价值的类似物,在化学工业中具有重要用途。尽管在该领域取得了进展,但仍然迫切需要一种通用催化解决方案,能够精确控制环状和非环状体系中的 C=C 键迁移位置,以提供二取代和三取代烯烃。在这里,我们展示了催化量的合适的地球丰富的铁基络合物、碱和硼基化合物促进有效和可控的烯烃转位。机理研究表明,这些过程可能涉及原位形成铁氢化物物种,该物种通过顺序烯烃插入/β-氢化物消除促进烯烃异构化。通过这个策略,
Modification of photochemical reactivity by zeolites: Role of cations in controlling the behavior of radicals generated within faujasites
α-Alkyldibenzylketones included in cation exchanged faujasite type zeolites show photobehavior different from that in isotropic organic solvents. Rearrangement and disproportionation which do not contribute in solution are the major processes within the cavities of faujasites. Cation size plays a major role in controlling the pathway pursued by the primary and the secondary radical pair.
Ruthenium Pincer-Catalyzed Selective Synthesis of Alkanes and Alkenes via Deoxygenative Coupling of Primary Alcohols
作者:Bitan Sardar、Nandita Biswas、Dipankar Srimani
DOI:10.1021/acs.organomet.2c00519
日期:2023.1.9
The selective conversion of alcohols to alkanes and alkenes is a captivating but extremely difficult process. Herein, we explored the activity of an acridine-derived SNS–Ru pincer complex in the selective conversion of primary alcohols into both long-chain alkenes and alkanes. Both homo- and cross-coupling reactions provide good yields of the desired products with excellent selectivity. Various control
Modification of photochemical reactivity by zeolites. Norrish type I and type II reactions of ketones as photochemical probes of the interior of zeolites
作者:V. Ramamurthy、D. R. Corbin、D. F. Eaton
DOI:10.1021/jo00305a024
日期:1990.8
Ohta, Hiromichi; Fujiwara, Hidenori; Tsuchihashi, Gen-ichi, Agricultural and Biological Chemistry, 1984, vol. 48, # 6, p. 1509 - 1516