Journal article

Publication year: 1998

Pages: 5086-5090

Journal: Organometallics

Volume number: 17

Issue number: 23

ISSN: 0276-7333

DOI Link: https://doi.org/10.1021/om980525o

Publisher: American Chemical Society

Abstract: 
Treatment of eta(1)-acetylide complexes [(eta(5)-C5H5)(CO)(NO)WC=CR](-) (R = C(CH3)(3) (2a), C6H5 (2b), p-CH3C6H4 (2c)) With ethyl iodoacetate in THF at -78 degrees C afforded, after protonation with diluted acids, the corresponding oxametallacyclopentadienyl complexes (eta(5)-C5H5)W(I)(NO)-[eta(2)-O=C(CH2COOC2H5)CH=CR] (3a-c). The formation of these metallafuran derivatives is rationalized by the electrophilic attack of ethyl iodoacetate on the metal center of 2 to create first [(eta(5)-C5H5)(I)(CO)(NO)WC=CR]. Subsequent nucleophilic addition of the eater enolate anion of [CH2COOC2H5]Li and a reductive-elimination step followed by protonation lead to the product 3, One of the reaction intermediates was trapped by the addition of CF3SO3CH3.

Harvard Citation style: Ipaktschi, J., Mirzaei, F., Reimann, K., Beck, J. and Serafin, M. (1998) η²-alkynyl and vinylidene transition metal complexes.: 5.: Reaction of the metal-acetylide [(η⁵-C₅H₅)(CO)(NO)WCCR]^- with ethyl iodoacetate as electrophile.: Preparation and crystal structure analysis of a metallacyclic complex, Organometallics, 17(23), pp. 5086-5090. https://doi.org/10.1021/om980525o

APA Citation style: Ipaktschi, J., Mirzaei, F., Reimann, K., Beck, J., & Serafin, M. (1998). η²-alkynyl and vinylidene transition metal complexes.: 5.: Reaction of the metal-acetylide [(η⁵-C₅H₅)(CO)(NO)WCCR]^- with ethyl iodoacetate as electrophile.: Preparation and crystal structure analysis of a metallacyclic complex. Organometallics. 17(23), 5086-5090. https://doi.org/10.1021/om980525o