18000-76-5Relevant academic research and scientific papers
Dehydrogenation of Cyanamides. An Approach to Cyanimides and Carbonyl Compounds
Carrau, Reyes,Freire, Raimundo,Hernandez, Rosendo,Suarez, Ernesto
, p. 1055 - 1058 (1986)
Treatment of cyanamides with lead tetraacetate afforded the corresponding cyanimides in high yields.As these compounds can be readily and efficiently hydrolysed to carbonyl compounds; this sequence of reactions allows the synthesis of aldehydes and ketones from primary amines.
Synthesis of 3-Epi-6,7-dideoxyxestobergsterol A
Kaji,Koami,Nakamura,Fujimoto
, p. 1480 - 1483 (2000)
3-Epi-6,7-dideoxyxestobergsterol A (2), an analogue of xestobergsterol A, has been synthesized from dehydroepiandrosterone (3) in 15 steps. The key synthetic intermediate, 15β,16α-dioxypregn-17(20)E-ene derivative 8, was prepared from the corresponding 15
Synthesis of 17-(isocyanotosylmethylene) steroids: precursors to pregnane derivatives
Leusen, Daan van,Leusen, Albert M. van
, p. 393 - 401 (2007/10/02)
The synthesis is described of a series of twenty 17-(isocyanotosylmethylene) steroids 5 from 17-oxo steroids and 4-tolylsulfonylmethyl isocyanide (TosMIC).Furthermore, nine analogous 17-(isocyanosulfonylmethylene) steroids (15-21a) have been prepared usin
SYNTHESIS OF 2-PROPYNYL ETHERS OF STEROID ALCOHOLS
Pouzar, Vladimir,Schneiderova, Lenka,Drasar, Pavel,Strouf, Oldrich,Havel, Miroslav
, p. 1888 - 1902 (2007/10/02)
2-Propynyl ethers, derived from steroid alcohols with hydroxyl in position 3β, 17 or 20, were prepared by reaction with propargyl bromide and sodium hydroxide under conditions of phase transfer catalysis.Other hydroxy groups in the steroid molecule were protected with the methoxymethyl or 2-tetrahydropyranyl group.
INFRARED SPECTRA OF COMPOUNDS WITH THE METHOXYMETHYL PROTECTING GROUP
Vasickova, Sona,Pouzar, Vladimir,Cerny, Ivan,Drasar, Pavel
, p. 90 - 100 (2007/10/02)
Infrared spectra of a series of compounds containing the CH3OCH2O- (MOM-O-) group have been studied.All the spectra exhibit three characteristic strong absorbtion bands due to coupled stretching vibrations of C-O-C-O-C grouping in the region 1200 - 1000 c
