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Volumn 40, Issue 6, 2003, Pages 1031-1039

Dihydrobenzoxazines and Tetrahydroquinoxalines by a Tandem Reduction-Reductive Amination Reaction

Author keywords

[No Author keywords available]

Indexed keywords

1 ACETYL 1,2,3,4 TETRAHYDROQUINOXALINE; 2 FLUORO 1 NITROBENZENE; 2 NITROACETANILIDE; 2 NITROPHENOL; 3,4 DIHYDRO 2H 1,4 BENZOXAZINE; ACETANILIDE DERIVATIVE; ALLYLIC HALIDE; ANION; BENZOXAZINE DERIVATIVE; CARBON; DIHYDROBENZOXAZINE; FORMALDEHYDE; HALIDE; HETEROCYCLIC COMPOUND; KETONE DERIVATIVE; METHANOL; NITROGEN; NITROKETONE; PALLADIUM; QUINOXALINE DERIVATIVE; TETRAHYDROQUINOXALINE; UNCLASSIFIED DRUG;

EID: 0347087382     PISSN: 0022152X     EISSN: None     Source Type: Journal    
DOI: 10.1002/jhet.5570400611     Document Type: Article
Times cited : (49)

References (44)
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    • J. B. Gale, J. Klucik, S. Subramanian and K. D. Berlin, Org. Prep. Proced. Int., 33, 487 (2001). This paper reports the synthesis of 2-allyloxy-1-nitrobenzene in 56% yield from allyl bromide and 2-nitrophenol using sodium hydroxide in water. We obtained a 90% yield when the reaction was run using sodium hydride in N,N-dimethylformamide.
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    • note
    • Reactions of allylic halides with aniline typically require the use of excess aniline to prevent multiple alkylations.
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    • note
    • A very minor amount (2-3%) of the products from N-methylation of 28 and 30 were also detected.
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    • This alcohol was prepared in two steps from 1-hexyne. Step 1: Markovnikov addition of hydrogen bromide to 1-hexyne, see J. Cousseau, Synthesis, 805 (1980). Step 2: Grignard reaction of the resulting 2-bromo-1-hexene with formaldehyde.
    • (1980) Synthesis , pp. 805
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    • The bromide was prepared in two steps from 1-cyclopentene-1-carboxaldehyde, see J. B. Brown, H. B. Henbest, and E. R. H. Jones, J. Chem. Soc., 3634 (1950). Step 1: Reduction of the aldehyde with lithium aluminum hydride. Step 2: Conversion of the resulting alcohol to the bromide with phosphorus tribromide, see L. Borowiecki and A. Kazubski, Pol. J. Chem., 52, 1447 (1978).
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    • The bromide was prepared in two steps from 1-cyclopentene-1-carboxaldehyde, see J. B. Brown, H. B. Henbest, and E. R. H. Jones, J. Chem. Soc., 3634 (1950). Step 1: Reduction of the aldehyde with lithium aluminum hydride. Step 2: Conversion of the resulting alcohol to the bromide with phosphorus tribromide, see L. Borowiecki and A. Kazubski, Pol. J. Chem., 52, 1447 (1978).
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    • note
    • The 3-bromo-2-phenyl-l-propene used in this procedure was prepared by reaction of 2-phenyl-2-propen-1-ol [17] with phosphorus tribromide [19]. The crude bromide was used without purification.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.