109-96-6Relevant articles and documents
A Modified Procedure for the Preparation of 2,5-Dihydropyrrole (3-Pyrroline)
Warmus, Joseph S.,Dilley, Garrett J.,Meyers, A. I.
, p. 270 - 271 (1993)
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Catalytic ring-closing olefin metathesis of sulfur-containing species: Heteroatom and other effects
Shon, Young-Seok,Lee, T. Randall
, p. 1283 - 1286 (1997)
This paper describes studies of the ring-closing metathesis of dialkyl sulfides and disulfides catalyzed by molybdenum and ruthenium alkylidenes. In general, the highest yields of ring-closed products were obtained using the molybdenum catalysts. Product yields were also strongly influenced by the substitution pattern about the double bonds: the yield of ring-closed products was found to decrease as the degree of substitution increased. These effects and other heteroatom effects are discussed.
RELATIVE STABILITIES OF 5-MEMBERED CYCLIC ALLYLAMINE/ENAMINE SYSTEMS
Ashcroft, William R.,Martinez, Silvio J.,Joule, John, A.
, p. 3005 - 3007 (1981)
Evidence bearing on the relative stabilities of 3- and 2-pyrrolines is reviewed.It is shown that 1-(indol-3-ylethyl)-3-pyrroline is only partially transformed into its enamine isomer by prolonged base treatment and it is concluded that within a 5-membered ring the allylamine is more stable than enamine.
CRYSTAL AND SALT OF NITROIMIDAZOLE, AND MANUFACTURING METHOD THEREOF
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Paragraph 0087-0089, (2019/09/20)
The present invention discloses a crystal form and salt of a nitroimidazole compound, and a manufacturing method thereof. The invention further comprises an application of the crystal form and salt in preparing a pharmaceutical product for preventing and treating an infection caused by Mycobacterium tuberculosis or another microbe.
Practical one-pot and large-scale synthesis of N-(tert-butyloxycarbonyl)-3- pyrroline
Rajesh, Tammana,Azeez, Shaik Abdul,Naresh, Erragunta,Madhusudhan, Gutta,Mukkanti, Kagga
experimental part, p. 638 - 640 (2010/04/22)
N-(tert-Butyloxycarbonyl)-3-pyrroline was prepared with high purity in large scale starting from cis-1,4-dichloro-2-butene via delepine reaction and subsequent cyclization in the presence of potassium carbonate followed by N-Boc protection in methanol.Judicious selection of base and solvent led to the use of a single solvent, i.e., methanol, for cyclization as well as for N-Boc protection to render the one-pot process from compound 2 more practical and greener than the stepwise version.