Weeks, Kellie L. published the artcileA three-step enantioselective synthesis of (+)- and (-)-α-thujone, Formula: C21H37BO, the publication is Organic & Biomolecular Chemistry (2021), 19(37), 8018-8020, database is CAplus and MEDLINE.
The stereocontrolled three-step synthesis of either enantiomer of α-thujone from com. available 3-methyl-1-butyne is described. The enantioselectivity originates from a Brown crotylation which is then conferred to the all-carbon quaternary center via chirality transfer in a gold-catalyzed cycloisomerization. The route is highly atom economical and requires no protecting groups or redox manipulations.
Organic & Biomolecular Chemistry published new progress about 99438-28-5. 99438-28-5 belongs to ethers-buliding-blocks, auxiliary class Chiral,Aliphatic cyclic hydrocarbon, name is (+)-B-Methoxydiisopinocampheylborane, and the molecular formula is C5H5NO3S, Formula: C21H37BO.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem