18243-59-9Relevant articles and documents
Synthesis of potentially biologically active 6-(1,3-butadiynyl)purines
K?ová?ek,Dvo?ák
, p. 40 - 47 (2015)
1,3-Alkadiynyl(trimethyl)silanes were prepared by the Negishi or Sonogashira reactions of bromoethynyl (trimethyl)silane with several terminal alkynes in 34-75% yield. However, the direct Hiyama coupling of these compounds with 6-iodopurine derivatives ha
Stereoselective synthesis of (E)- and (Z)-acetals of pent-2-en-4-yn-1-al and related dienynes and dienediynes
Suzenet, Franck,Parrain, Jean-Luc,Quintard, Jean-Paul
, p. 2957 - 2963 (1999)
(3E)-5,5-Diethoxypent-3-en-1-yne was stereospecifically prepared by Sonogashira-Linstrumelle cross-coupling between (E)-3-iodoacrolein diethylacetal and (trimethylsilyl)acetylene. The (Z) isomer was obtained by Stille cross-coupling between the corresponding (Z)-vinyltin and 1-bromo-2- (trimethylsilyl)acetylene. In the case of the (E) isomer, transacetalisation occurred without isomerization affording a large variety of (E)-enynals protected as acetals. It has also been shown to be possible to obtain the corresponding (E,E)-dienediyne through sp-sp homo-coupling under appropriate experimental conditions.
Catalytic Asymmetric Hydroacyloxylation/Ring-Opening Reaction of Ynamides, Acids, and Aziridines
Li, Xiangqiang,Zeng, Hongkun,Lin, Lili,Feng, Xiaoming
supporting information, p. 2954 - 2958 (2021/05/05)
A highly enantioselective three-component reaction of ynamides with carboxylic acids and 2,2′-diester aziridines has been realized by using a chiral N,N′-dioxide/Ho(OTf)3 complex as a Lewis acid catalyst. The process includes the formation of an α-acyloxyenamide intermediate through the addition of carboxylic acids to ynamides and the following enantioselective nucleophilic addition to in-situ-generated azomethine ylides induced by the chiral catalyst. A range of amino acyloxyenamides are delivered in moderate to good yields with good ee values. In addition, a possible catalytic cycle with a transition model is proposed to elucidate the reaction mechanism.
SOLAR CELL DYES FOR COPPER REDOX BASED DYE SENSITIZED SOLAR CELLS AND COMBINATIONS THEREOF
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Paragraph 0113-0114, (2021/04/10)
The present application discloses compounds and compositions, useful in the manufacture of dye-sensitized solar cells and other similar technology.
SOLAR CELL DYES FOR COPPER REDOX BASED DYE SENSITIZED SOLAR CELLS AND COMBINATIONS THEREOF
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Paragraph 00114, (2020/02/06)
The present application discloses compounds and compositions, useful in the manufacture of dye-sensitized solar cells and other similar technology.