Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Paramashivappa Rangappa"'
Autor:
Sulur G. Manjunath, Sridhran R, Sudhir Nambiar, Vinod Kumar Ch, Suresh Kumar Sythana, Smitha Chitrapadi, Gajanan Tammanna Kantikar, Avipsa Ghosh, Paramashivappa Rangappa
Publikováno v:
Organic Process Research & Development. 18:947-951
The development of a convenient, safe and scalable process for AZD8329 manufacturing is reported here. Synthesis was achieved in a two-step telescopic process with an excellent overall yield of 75%. In the first step enamine (6) was synthesized with
Publikováno v:
Journal of Sulfur Chemistry. 29:9-18
Reactions of thianthrene cation radical tetrafluoroborate with aldehydes, namely, butanal, pentanal, hexanal, heptanal, octanal, nononal, decanal, undecanal, dodecanal, tridecanal, and 3-phenylpropanal, led to the formation of α -(5-thianthreniumyl)
Publikováno v:
Magnetic Resonance in Chemistry. 45:971-979
The Tobey-Simon (additivity) rule for aromatic groups which was devised about 40 years ago has been found to need revision. The rule shows an aromatic group attached to a C==C double bond as causing a downfield chemical shift of a cis-related vinylic
Publikováno v:
Journal of Sulfur Chemistry. 27:617-664
A comprehensive review of recent chemistry of thianthrene cation radical is presented. Particularly, products and mechanisms of their formation from reactions with azo compounds, hydrazones, oximes, sulfonamides, alcohols, phenols, alkenes, alkynes a
Publikováno v:
Journal of Sulfur Chemistry. 27:409-417
Reactions of thianthrene cation radical tetrafluoroborate ( ) with α, ω-diols, HO(CH2) n OH (4b–g, n=5, 6, 8–10, 12), at the molar ratio Th•+:4 2/1 in MeCN containing 2,6-di-tert-butyl-4-methylpyridine (DTBMP) led to formation of bisadducts,
Autor:
Kenton H. Whitmire, Paramashivappa Rangappa, John N. Marx, Henry J. Shine, and Anna T. Kelly, Teyeb Ould-Ely
Publikováno v:
The Journal of Organic Chemistry. 70:9764-9770
[structure: see text] Thianthrene cation radical tetrafluoroborate (Th*+ BF4(-)) added to the terminal alkynes 1-pentyne, 1-hexyne, 1-heptyne, 1-octyne, 1-nonyne, and 1-decyne to form trans-1,2-bis(5-thianthreniumyl)alkene tetrafluoroborates (1-6). S
Autor:
Dennis C. Shelly, Paramashivappa Rangappa, John N. Marx, Kenton H. Whitmire, Teyeb Ould-Ely, Henry J. Shine
Publikováno v:
The Journal of Organic Chemistry. 70:3877-3883
[reaction: see text] Thianthrene cation radical tetrafluoroborate (Th*+ BF4-) added to 2-butyne, 3-hexyne, 4-octyne, and 5-decyne in MeCN to form trans bisadducts R(Th+)C=C(Th+)R, where R = Me, Et, Pr, Bu (7a-d). Phenoxathiin cation radical tetrafluo
Publikováno v:
ChemInform. 38