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Volumn 75, Issue 2, 2010, Pages 334-341

Rhenium- and manganese-catalyzed synthesis of aromatic compounds from 1,3-dicarbonyl compounds and alkynes

Author keywords

[No Author keywords available]

Indexed keywords

[2+2+2] CYCLOADDITION; A-CARBON; AROMATIC SKELETON; ARYL ACETYLENES; CATALYZED SYNTHESIS; CHEMICAL EQUATIONS; CYCLOADDITION REACTION; DICARBONYL COMPOUNDS; DIELS-ALDER REACTION; DIKETONES; INTRAMOLECULAR CYCLIZATIONS; KETO ESTER; REACTION SEQUENCES; REGIO-SELECTIVE; TERMINAL ALKYNE;

EID: 75349089073     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo902072q     Document Type: Article
Times cited : (44)

References (36)
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    • For rhenium-catalyzed reactions, see
    • For rhenium-catalyzed reactions, see:
  • 11
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    • For manganese-catalyzed reactions, see
    • For manganese-catalyzed reactions, see:
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    • Kuninobu, Y.; Kikuchi, K.; Takai, K. Chem. Lett. 2008, 37, 740. (5) Kuninobu, Y.; Kawata, A.; Takai, K. Org. Lett. 2005, 7, 4823.
    • (b) Kuninobu, Y.; Kikuchi, K.; Takai, K. Chem. Lett. 2008, 37, 740. (5) Kuninobu, Y.; Kawata, A.; Takai, K. Org. Lett. 2005, 7, 4823.
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    • Another group also reported on the similar manganese-catalyzed reaction. See
    • Another group also reported on the similar manganese-catalyzed reaction. See: Tsuji, H.; Yamagata, K.-i.; Fujimoto, T.; Nakamura, E. J. Am. Chem. Soc. 2008, 130, 7792.
    • (2008) J. Am. Chem. Soc , vol.130 , pp. 7792
    • Tsuji, H.1    Yamagata, K.-I.2    Fujimoto, T.3    Nakamura, E.4
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    • When β-keto esters with a substituent at the active methylene moiety were used, insertion of alkynes into a carbon, carbon bond of β-keto esters occurred, and successive intramolecular cyclization gave 2-pyranones
    • When β-keto esters with a substituent at the active methylene moiety were used, insertion of alkynes into a carbon - carbon bond of β-keto esters occurred, and successive intramolecular cyclization gave 2-pyranones.
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    • See: Kuninobu, Y.; Kawata, A.; Nishi, M.; Takata, H.; Takai, K. Chem. Commun. 2008, 6360. (9) The intermediate shown in Scheme 2 is thought to be a manganese- and rhenium-catalyzed ring expansion and carbon-chain extension reaction. See: Kuninobu, Y.; Kawata, A.; Takai, K. J. Am. Chem. Soc. 2006, 128, 11368. See also ref 8.
    • See: Kuninobu, Y.; Kawata, A.; Nishi, M.; Takata, H.; Takai, K. Chem. Commun. 2008, 6360. (9) The intermediate shown in Scheme 2 is thought to be a manganese- and rhenium-catalyzed ring expansion and carbon-chain extension reaction. See: Kuninobu, Y.; Kawata, A.; Takai, K. J. Am. Chem. Soc. 2006, 128, 11368. See also ref 8.
  • 18
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    • Nakamura's group reported on the mechanistic investigations. In the paper, they claimed that the reaction must proceed via the formation of alkenyl-magnesium intermediate (Scheme 3). See: Yoshikai, N.; Zhang, S.; Yamagata, K.-i.; Tsuji, H.; Nakamura, E. J. Am. Chem. Soc. 2009, 131, 4099. (11) Kuninobu, Y.; Takata, H.; Kawata, A.; Takai, K. Org. Lett. 2008, 10, 3133.
    • Nakamura's group reported on the mechanistic investigations. In the paper, they claimed that the reaction must proceed via the formation of alkenyl-magnesium intermediate (Scheme 3). See: Yoshikai, N.; Zhang, S.; Yamagata, K.-i.; Tsuji, H.; Nakamura, E. J. Am. Chem. Soc. 2009, 131, 4099. (11) Kuninobu, Y.; Takata, H.; Kawata, A.; Takai, K. Org. Lett. 2008, 10, 3133.
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    • For some representative examples of 2-pyranone synthesis, see
    • For some representative examples of 2-pyranone synthesis, see:
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    • For the formation of aromatic compounds from 2-pyranones and acetylenes, see: a
    • For the formation of aromatic compounds from 2-pyranones and acetylenes, see: (a) Tam, T. F.; Coles, P. Synthesis 1988, 383.
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    • Diels-Alder reactions between 2-pyranone 8b and alkyne 9a were investigated in the presence or absence of a rhenium catalyst, ReBr(CO)3(thf)]2, and MS4A to clarify the role of the rhenium catalyst and MS4A in the Diels-Alder reactions. The yields are as follows: no catalyst 53, ReBr(CO)3(thf)]2 (2.5 mol , 80, ReBr(CO)3(thf)]2 (2.5 mol , MS4A (200 wt%-Re cat, 64, and MS4A (200 wt%-Re cat, 40, These results show that a rhenium catalyst, ReBr(CO)3(thf)]2, accelerated the Diels-Alder reaction between 8b and 9a, whereas MS4A slightly inhibited the Diels-Alder reaction, 15) In the first step of the reaction, 2-pyranone 8b was formed in 96% yield, 16) For examples of transition metal-catalyzed Conia-ene reactions, see: (a) Kennedy-Smith, J. J, Staben, S. T, Toste, F. D. J. Am. Chem. Soc. 2004, 126, 4526
    • 2, accelerated the Diels-Alder reaction between 8b and 9a, whereas MS4A slightly inhibited the Diels-Alder reaction. (15) In the first step of the reaction, 2-pyranone 8b was formed in 96% yield. (16) For examples of transition metal-catalyzed Conia-ene reactions, see: (a) Kennedy-Smith, J. J.; Staben, S. T.; Toste, F. D. J. Am. Chem. Soc. 2004, 126, 4526.
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    • There have been some examples on chemical transformations via carbon-carbon bond cleavage. See: a, Murai, S, Ed
    • There have been some examples on chemical transformations via carbon-carbon bond cleavage. See: (a) Murakami, M.; Ito, Y. (Murai, S., Ed.) Top. Organomet. Chem. 1999, 3, 97.
    • (1999) Top. Organomet. Chem , vol.3 , pp. 97
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    • Wiley, R. H.; Jarboe, C. H.; Hayes, F. N. J. Am. Chem. Soc. 1957, 79, 2602. (20) The structure of 17b was determined by the comparison with the spectrum data of 17b, which was prepared by palladium-catalyzed cross-coupling reaction between 4-methoxyphenylboronic acid and 2,3,5-trimethylphenyl trifluoromethanesulfonate.
    • (b) Wiley, R. H.; Jarboe, C. H.; Hayes, F. N. J. Am. Chem. Soc. 1957, 79, 2602. (20) The structure of 17b was determined by the comparison with the spectrum data of 17b, which was prepared by palladium-catalyzed cross-coupling reaction between 4-methoxyphenylboronic acid and 2,3,5-trimethylphenyl trifluoromethanesulfonate.
  • 36
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    • In Scheme 5, the formation of β-keto acid was not detected by GC. The β-keto carboxylic acid might be decomposed (Krapcho reaction) or reacted with a species before decomposition under the reaction conditions. Therefore, the generation of β-keto carboxylic acid is only speculated.
    • In Scheme 5, the formation of β-keto acid was not detected by GC. The β-keto carboxylic acid might be decomposed (Krapcho reaction) or reacted with a species before decomposition under the reaction conditions. Therefore, the generation of β-keto carboxylic acid is only speculated.


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