In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called N-Heterocyclic Carbene-Catalysed Mukaiyama-Michael Reaction and Mukaiyama Aldol/Mukaiyama-Michael Three-Component Coupling Reaction*, published in 2017, which mentions a compound: 286014-53-7, mainly applied to carbene catalyzed Mukaiyama Michael reaction silyl enol ether chalcone; three component coupling carbene catalyzed silyl enol ether chalcone, Safety of 1,3-Dimesityl-1H-imidazol-3-ium tetrafluoroborate.
An N-heterocyclic carbene-catalyzed Mukaiyama-Michael addition between several trimethylsilyl (TMS) enol ethers and chalcone derivatives was discovered. A related reaction cascade involving dehydrative Mukaiyama aldol followed by a Mukaiyama-Michael addition process was developed. The later reaction can also be achieved as a three-component coupling reaction. The enantioselective variant of these reactions was examined with homochiral catalysts. Though these catalysts were active, they fail to achieve enantioinduction.
There are many compounds similar to this compound(286014-53-7)Safety of 1,3-Dimesityl-1H-imidazol-3-ium tetrafluoroborate. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.
Reference:
Bromide – Wikipedia,
bromide – Wiktionary