Usui, Kazuteru published the artcileSynthesis and Resolution of Substituted [5]Carbohelicenes, Related Products of chlorides-buliding-blocks, the publication is Journal of Organic Chemistry (2015), 80(12), 6502-6508, database is CAplus and MEDLINE.
Three types of racemic [5]helicenyl acetates [I (R = Ac), II, and III (R = Ac)] were synthesized. The synthesis of II was achieved by regioselective oxidation using o-iodoxybenzoic acid. The enzymic kinetic resolution of I–III (R = Ac) was studied. The conversion with the highest rate and ee was obtained using I (R = Ac) as the substrate and lipase Amano PS-IM as the enzyme. The two enantiomers of 1-[5]helicenol III (R = H) were separated using (1S)-10-camphorsulfonyl chloride as the chiral resolving agent.
Journal of Organic Chemistry published new progress about 21286-54-4. 21286-54-4 belongs to chlorides-buliding-blocks, auxiliary class Chiral,Chloride,Sulfonyl chlorides,Aliphatic cyclic hydrocarbon,Ketone, name is ((1S,4R)-7,7-Dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonyl chloride, and the molecular formula is C14H21BO3S, Related Products of chlorides-buliding-blocks.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics