Synthesis 2002(1): 0053-0058
DOI: 10.1055/s-2002-19296
PAPER
© Georg Thieme Verlag Stuttgart · New York

Synthesis of Insecticidally Active Halofenozide-[(Acyloxy)alkoxy]carbonyl and (Acyloxy)alkyl Derivatives

Mark J. Mulvihill*, Steven H. Shaber, Brian S. MacDougall, Chris Ajello, Blanca Martinez-Teipel, Rhoda Joseph, Duyan V. Nguyen, Damian G. Weaver, KiHo Chung, Arkady Gusev, Joel M. Wierenga, William D. Mathis
Rohm and Haas Company, 727 Norristown Road, Spring House, Pennsylvania, 19477, USA
Fax: +1(215)6191617; e-Mail: mark.mulvihill@osip.com;
Further Information

Publication History

Received 9 June 2001
Publication Date:
04 August 2004 (online)

Abstract

The synthesis of a diverse series of novel insecticidally active carboxylic acid N’-benzoyl-N’-tert-butyl-N-(4-chlorobenzo-yl)hydrazinocarbonyloxy methyl and ethyl esters as well as carboxylic acid N’-benzoyl-N’-tert-butyl-N-(4-chlorobenzoyl)hydrazino methyl esters are reported.

    References

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  • 6b

    We recently reported the novel cyclization reaction in which treatment of the potassium salt of N-benzoyl-N’-tert-butyl-N-(4-chloro-benzoyl)hydrazide 1b with a carbonyl equivalent such as phosgene at -78 °C afforded 3-(4-chlorobenzoyl)-5-phenyl-3H-[1,3,4]oxadiazol-2-one: Mulvihill, M. J.; Nguyen, D. V.; MacDougall, B. S.; Weaver, D. G.; Mathis, W. D. Synthesis 2001, 1965.

  • 6c

    In light of these results, it was to our pleasant surprise that treatment of the potassium salt of halofenozide (1b) with known carbonyl equivalents such as chloroformates 2 and 3 did not afford cyclized oxadiazol-2-one products but afforded stable isolable compounds 4, 5 and 6 which were further reacted to afford stable isolable esters 7 and 8.

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3

The Presidential Green Chemistry Award for Rohm and Haas diacyl hydrazines can be found on the following web pages: http://www.turfnet.com/news/rohm_haas.asp and http://www.epa.gov/greenchemistry/past.htm.

10

Treatment of thiocarbonates with sulfuryl chloride typically affords the respective chloroformates (ref. [5e] ). However, in this case, treatment of thiocarbonate 10 with sulfuryl chloride afforded chloromethyl derivative 11 with no trace of the respective chloroformate. Chloromethyl derivative 11 was not stable to silica gel column chromatography. However, chloromethyl derivative 11 could be recrystallized from hot hexanes to afford the pure product, which was stored at -20 °C.