Development of remote C-H bond functionalization of redox-active alcohol derivatives and oxidative transformations under photoredox catalysis
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The reaction of 4-methoxy-1,2,3,4-tetrahydroisoquinolines I (R = MeO, R1 = H; RR1 = OCH2O) with Li diisopropylamide affords dimerization products II. The intermediacy of orthoquinodimethanes and diradicals is assumed. [on SciFinder (R)] ...
Rate ratios were obtained for the base-catalyzed 1,4-dehydrochlorination of (E)- and (Z)-Me3CCCl:C:C:CClCMe3 to give Me3CC.tplbond.CC.tplbond.CCMe3. In the KOMe/MeOH or KOCMe3/Me2SO systems the reactivity of both isomers was similar. With KOCMe3 in Me3COH, ...
Solid epoxy resins are produced at Vantico SA by catalyzed reactions of a low-mol. wt. liq. resin (RBL) with bisphenol A (BPA). These reactions lead to solid epoxy resins, which are used in surface coatings or adhesives. The chain lengthening step (advance ...
Contributions of radical and non-radical processes have been determined in the formation of radiolysis products of n-heptane, n-octane, n-nonane and n-decane in a large range of temperature. Calculations are based on the combination and the dismutation of ...
A crit. evaluation of published paraffin hydroconversion data shows that MEL-type zeolites preferentially hydrocrack paraffins where two Me groups are sepd. by a methylene group, whereas MFI-type zeolites prefer paraffins with geminal Me groups (preferably ...
Solid epoxy resins are produced by catalyzed reactions of a low-mol.-wt. liq. resin (RBL) with bisphenol A (BPA). These reactions lead to solid epoxy resins that have many uses. The chain lengthening step (advancement reaction) is based on the reaction of ...
The potential of EtOH [64-17-5] fermn. of whey permeate as a means of whey disposal and utilization in Switzerland was explored. The effluent lactose content of unconcd. permeate can be reduced to 2% of the original value by continuous fermn. with Kluyvero ...
The f-value of the 2160-.ANG. band of the free Me radical was detd. exptl. as (1.2 +- 0.2) * 10-2. The rate coeff. for combination is (2.43 +- 0.24) * 1013 cm3/mole-sec at 293 DegK. Me radicals were generated by the flash photolysis of small partial pressu ...
An efficient chloro-deamination procedure was developed and a remarkable deuterium isotope effect indicating a radical mechanism was documented. Key to success was the coexistence of a reductant (CuCl) and a ligand-transfer agent (CuCl2) in the reaction me ...
