Results 21 to 30 of about 5,486 (323)
Beilstein Journal of Organic Chemistry, 2016 The mechanism of the thermal cyclization of enyne-carbodiimides 7a–c has been studied computationally by applying the DFT method. The results indicate that enyne-carbodiimides preferentially follow the C2–C6 (Schmittel) cyclization pathway in a concerted
Anup Rana +3 more
doaj +1 more source
Synthesis and Photochemical Cyclization of a Novel Enyne-Carbodiimide
Molecules, 2000 The triplet sensitized cyclization of enyne-carbodiimide 4 leads to efficient formation of indoloquinoline 5 with concomittant loss of a methyl group. The efficient loss of the methyl group was explained using AM1 semiempirical calculations.
Jens-Peter Steffen +2 more
doaj +1 more source
A PROMISING MODIFICATION OF THE CARBODIIMIDE METHOD USING AN INSOLUBLE CARBODIIMIDE [PDF]
Chemistry Letters, 1975 Abstract A modified polystyrene-divinylbenzene copolymer, in which ethylcarbodiimidomethyl groups were linked so as to be available as a condensing agent for peptide synthesis, were prepared. This polymer proved of great use in synthesizing some protected peptides without accompanying any troublesome by-product which would otherwise be ...
Hisashi Ito +2 more
openaire +1 more source
Carbosilane Dendrimeric Carbodiimides: Site Isolation as a Lactamization Tool
, 2016 The convergent syntheses of three generations of carbosilane dendrimeric carbodiimides are described. The wedge-type building blocks were synthesized in a divergent way, starting from allyl chloride and a repetitive sequence of hydrosilylation with ...
Jan H. van Maarseveen (1489900) +6 more
core +3 more sources
Beilstein Journal of Organic Chemistry, 2008 The aza-Wittig reactions of iminophosphorane 3 with aromatic isocyanates generated carbodiimides 4, which were reacted with alkylamines under mild conditions to give a series of 2-(alkylamino)-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-ones 6 and 8 in ...
Yang-Gen Hu +3 more
doaj +1 more source
Reactions of asymmetric carbodiimides with azoimide
, 1979 Reaction of asymmetric aliphatic-aromatic and diaryl carbodiimides with HN3 leads to 1,5-disubstituted tetrazoles. Carbodiimides of general formula C6H5-N=C=N-R (R = alkyl) from an adduct at C=N bond exclusively at a less basic nitrogen, i.e. near phenyl
Igor Hrušovský +2 more
core +1 more source
, 2016 An efficient strategy for the synthesis of a variety of 2-animobenzimidazole derivatives has been developed. The reaction proceeded from o-haloanilines and carbodiimides via copper(I)-catalyzed domino reaction in the presence of tert-butoxide to afford ...
Qian Liao (1489453) +3 more
core +2 more sources
Inorganic Solid-State Chemistry with Main Group Element Carbodiimides
, 1998 Organosilicon carbodiimides have been successfully applied as single-source precursor compounds for the synthesis of novel ternary Si-, C-, and N-containing solid phases.
Kroke, Edwin +6 more
core +1 more source
Molecular Oncology, EarlyView.Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang +12 more
wiley +1 more source
Carbodiimides as energy materials: which directions for a reasonable future?
, 2018 International audienceA little less than a decade after their quantum-chemical prediction and eventual synthesis, solid-state transition-metal carbodiimides and closely related compounds have somewhat unexpectedly emerged as energy materials.
Sougrati, Moulay, +7 more
core +1 more source