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Volumn 14, Issue 32, 2008, Pages 9873-9877

Reaction control in the organocatalytic asymmetric one-pot, three-component reaction of aldehydes, diethyl α-aminomalonate and nitroalkenes: Toward diversity-oriented synthesis

Author keywords

Azomethine ylides; Cycloaddition; Michael addition; Nitroalkenes; Organocatalysis

Indexed keywords

ALDEHYDE; ALKENE; DIETHYL AMINOMALONATE; MALONIC ACID DERIVATIVE; NITRO DERIVATIVE;

EID: 55449131123     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.200801410     Document Type: Article
Times cited : (131)

References (68)
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    • The combination of thiourea-tertiary amine 1a and AgF could not catalyze the dipolar cycloaddition because of the preferable formation of the thiourea-Ag complex. However, urea-tertiary amine 1b-AgF promoted the cycloaddition (Table 1, entry 3).
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    • The absolute configuration of 4 has not yet been determined. It was assigned based on the concerted catalytic mode by Takemoto et al.: T. Okino, Y. Hoashi, T. Furukawa, X. Xu, Y. Takemoto, J, Am. Chem. Soc. 2005, 127, 119-125. Please see Supporting Information.
    • The absolute configuration of 4 has not yet been determined. It was assigned based on the concerted catalytic mode by Takemoto et al.: T. Okino, Y. Hoashi, T. Furukawa, X. Xu, Y. Takemoto, J, Am. Chem. Soc. 2005, 127, 119-125. Please see Supporting Information.
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    • The direct Michael addition of diethyl α-aminomalonate to nitroalkenes, catalyzed by lb, could not proceed in the absence of aldehydes
    • The direct Michael addition of diethyl α-aminomalonate to nitroalkenes, catalyzed by lb, could not proceed in the absence of aldehydes.
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    • The Michael adducts have been proposed as intermediates in the [3+2] cycloaddition of azomethine ylides. See ref. 4 and ref. 9.
    • The Michael adducts have been proposed as intermediates in the [3+2] cycloaddition of azomethine ylides. See ref. 4 and ref. 9.
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    • Thiourea-pyrrole catalysts 1h-m were prepared in a similar procedure to 1g, reported by Taylor and Jacobsen. See: M.S. Taylor, E. N. Jacobsen, J. Am. Chem. Soc. 2004, 126, 10558-10559.
    • Thiourea-pyrrole catalysts 1h-m were prepared in a similar procedure to 1g, reported by Taylor and Jacobsen. See: M.S. Taylor, E. N. Jacobsen, J. Am. Chem. Soc. 2004, 126, 10558-10559.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.