中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 1-(tert-butyldimethylsilyloxy)-4-pentyne | 61362-77-4 | C11H22OSi | 198.381 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (Z)-1-iodo-5-tert-butyldimethylsilyloxy-pent-1-ene | 152630-29-0 | C11H23IOSi | 326.293 |
—— | (Z)-1-tert-butyldimethylsilyloxy-7-trimethylsilylhept-4-en-6-yne | 202604-05-5 | C16H32OSi2 | 296.6 |
Exploration of elementary reactions in organometallic catalysis is an important method with which to discover new reactions. In this article, we report a gold(I)‐catalyzed iodo‐alkynylation of benzyne involving the merging of challenging migratory insertion and an oxidative addition process in gold catalytic cycle. A wide range of structurally diverse alkynyl iodides are good coupling partners in this iodo‐alkynylation transformation. Both aliphatic and aromatic alkynyl iodides can react with benzynes smoothly to afford highly functionalized 1,2‐disubstituted aromatics in moderate to good yields. Its good functional group compatibility and late‐stage application of complex molecules demonstrate its synthetic robustness. Studies of the mechanism reveals the feasibility of oxidative addition and the DFT calculations demonstrate the possible migratory insertion of benzyne into AuIII‐carbon bonds in the AuI/AuIII redox catalytic cycle, representing an important step towards an elementary reaction in gold chemistry research.
This article describes the application of a first-generation phosphoramidite catalyst to the construction of the most commonly encountered subunits of bromine-containing natural products. The process is compared with previous efforts, and is found to be complementary to existing methods. Application of the process enables bromocarbocyclisations, bromoetherifications, and bromoallene formation using the common laboratory reagent N-bromosuccinimide.