Asymmetric Dearomatizing Fluoroamidation of Indole Derivatives with Dianionic Phase-Transfer Catalyst.
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DOI: 10.1021/acs.orglett.0c02026
Abstract: Asymmetric dearomatizing fluorocyclization of indole derivatives was investigated using a dicarboxylate phase-transfer catalyst. This reaction proceeds under mild reaction conditions to provide fluoropyrroloindoline derivatives in a highly enantioselective manner. Various substitution patterns on the indole… read more here.
Keywords: phase transfer; indole derivatives; transfer catalyst; asymmetric dearomatizing ... See more keywords
Sulfonamide as Photoinduced Hydrogen-Atom Transfer Catalyst for Regioselective Alkylation of C(sp3)-H Bonds Adjacent to Heteroatoms.
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DOI: 10.1021/acs.orglett.0c03992
Abstract: Based on the DFT calculations, the sulfonamide was explored as an efficient hydrogen-atom transfer catalyst for the C(sp3)-H alkylation. The combination of a metal-free photoredox catalyst and a sulfonamide catalyst enables highly regioselective alkylation of… read more here.
Keywords: atom transfer; sp3; hydrogen atom; alkylation ... See more keywords
Transfer-catalyst-free biomimetic asymmetric reduction of 3-sulfonyl coumarins with a regenerable NAD(P)H model.
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DOI: 10.1039/d1cc06896b
Abstract: A novel transfer-catalyst-free biomimetic reduction of the tetrasubstituted olefins 3-sulfonyl coumarins with the chiral and regenerable [2.2]paracyclophane-based NAD(P)H model CYNAM has been developed, affording chiral 3-sulfonyl dihydrocoumarins with excellent enantioselectivities. read more here.
Keywords: free biomimetic; catalyst free; transfer catalyst; sulfonyl coumarins ... See more keywords
Polymer-Supported Poly(Ethylene Glycol) as a Phase-Transfer Catalyst for Cross-Aldol Condensation of Isobutyroaldehyde and Formaldehyde
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DOI: 10.3390/molecules27196459
Abstract: Immobilized poly(ethylene glycol) (PEG 600-PS) was used as an effective phase-transfer catalyst for the synthesis of hydroxypivaldehyde from isobutyraldehyde (IBA) and formaldehyde in the presence of an inorganic base. Studies on the influence of the… read more here.
Keywords: poly ethylene; catalyst; phase transfer; transfer catalyst ... See more keywords
Automated Optimized Synthesis of [18F]FLT Using Non-Basic Phase-Transfer Catalyst with Reduced Precursor Amount
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DOI: 10.3390/molecules27238323
Abstract: 3′-deoxy-3′-[18F]fluorothymidine ([18F]FLT) is a positron emission tomography (PET) tracer useful for tumor proliferation assessment for a number of cancers, particularly in the cases of brain, lung, and breast tumors. At present [18F], FLT is commonly… read more here.
Keywords: phase transfer; transfer catalyst; synthesis; 18f flt ... See more keywords
Preparation of-hydroxyphenylacetic acid with cyclodextrins as an effectivephase-transfer catalyst and its reaction mechanism
Sign Up to like & getrecommendations! Published in 2019 at "TURKISH JOURNAL OF CHEMISTRY"
DOI: 10.3906/kim-1809-37
Abstract: An effective procedure for the synthesis of $\alpha $-hydroxyphenylacetic acid with cyclodextrin (CD) catalysts was developed. The phase-transfer catalyst types, catalyst loadings, reaction times, reaction temperatures, and substrate molar ratios were investigated to optimize the… read more here.
Keywords: preparation hydroxyphenylacetic; transfer catalyst; reaction; mechanism ... See more keywords