Brown, Gerbert C. published the artcileChiral synthesis via organoboranes. 26. An efficient synthesis of isoprenyl derivatives of borane. Valuable reagents for the isoprenylboration of aldehyde. A convenient route to both enantiomers of ipsenol and ipsdienol in high optical purity, COA of Formula: C21H37BO, the publication is Tetrahedron (1990), 46(13-14), 4463-72, database is CAplus.
Preparation of B-isoprenyldialkylboranes is achieved by adopting the Brandsma modification of the Schlosser procedure, namely metalation of isoprene with potassium 2,2,5,5-tetramethylpiperidide followed by sequential treatment with B-methoxydialkylborane and boron trifluoride-etherate. These reagents are used for the convenient isoprenylation of aldehydes. Reaction of isovaleraldehyde and β,β-dimethylacrolein with B-2′-isoprenyldiisopinocampheylborane (I) provides both ipsenol (II) and ipsdienol (III), resp. in 65% yields and 96% ee.
Tetrahedron 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 C21H37BO, COA of Formula: C21H37BO.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem