Synthesis of 1,2-phenylenedimethanols by base-promoted reduction of isobenzofuran-1(3H)-ones with silane
作者:Bin Liu、Xigeng Zhou
DOI:10.1016/j.cclet.2018.11.025
日期:2019.3
Abstract An efficient method for preparation of substituted 1,2-phenylenedimethanols and aliphatic 1,4-diols that are valuableintermediates in organic synthesis, has been developed by the base-promoted reduction of isobenzofuran-1(3H)-ones and γ-lactones with silane under mild conditions. Compared with traditional procedures using stoichiometric amounts of metal hydrides and alkyl reductants, the
CYP505E3: A Novel Self‐Sufficient ω‐7 In‐Chain Hydroxylase
作者:Mpeyake Jacob Maseme、Alizé Pennec、Jacqueline Marwijk、Diederik Johannes Opperman、Martha Sophia Smit
DOI:10.1002/anie.202001055
日期:2020.6.22
The self‐sufficientcytochromeP450 monooxygenase CYP505E3 from Aspergillus terreus catalyzes the regioselective in‐chain hydroxylation of alkanes, fatty alcohols, and fatty acids at the ω‐7 position. It is the first reported P450 to give regioselective in‐chain ω‐7 hydroxylation of C10–C16 n ‐alkanes, thereby enabling the one step biocatalytic synthesis of rare alcohols such as 5‐dodecanol and 7‐tetradecanol
Cyclic ethers have been effectively synthesized via the intramolecular cyclization of diols using trimethyl phosphate and NaH. The present cyclization could proceed at room temperature to produce 5–7 membered cyclic ethers in good to excellent yields. Substrates possessing a chiral secondary hydroxy group were transformed into the corresponding chiral cyclic ethers along with the retention of their
One-pot synthesis of heterocyclic compounds initiated by chemoselective addition to β-acyl substituted unsaturated aldehydes with nucleophilic tin complexes
作者:Ikuya Shibata、Hirofumi Kato、Makoto Yasuda、Akio Baba
DOI:10.1016/j.jorganchem.2006.03.043
日期:2007.1
β-Acyl substituted unsaturated aldehydes 1 were revealed to be good precursors for the synthesis of various heterocycliccompounds by the combination with tin nucleophiles. Various 2-monosubstituted pyrroles were prepared in an one-pot procedure via the reductive amination of formyl groups of 1 by using Bu2SnIH–HMPA complex. One-pot synthesis of heterocycles was carried out initiated by chemoselective