TY  - JOUR
AB  - The metallophosphaalkene [eta]5-C5Me5)(CO)2Fe-P=C(NMe2)2 (1) was converted into the stable metallated 1-phospha-1,3-butadiene, [eta]5-C5Me5)(CO)2Fe-P=C(E)=C-C(E)=C(NMe2)2 5a) and the [3+2]-cycloadduct ([eta]5-C5Me5)(CO)Fe-C(O)-C(E)=C(E)-P=C(NMe2)2 (4 a) by treatment with the alkyne E-C[triplebond]C-E (E = CO2Me). A similar reaction of 1 with Me-C[triplebond]C-E (E = CO2Me) resulted in the formation of the 1,2-dihydrophosphete ([eta]5-C5Me5)(CO)2Fe-PC(=CH2)-C(E)=C-NMe2 (6). The cycloadduct ([eta]5-C5Me5)(CO)Fe-C(O)-C[C(O)tBu]=C(Ph)-P=C(NMe2)2 (4c) was the sole tractable product from the reaction of 1 with the alkyne Ph-C[triplebond]C-C(O)tBu. The compounds 4a-c, 5a, b and 6 have been characterized by elemental analysis as well as by spectroscopic data (IR, 1H,13C, 31P NMR, MS). The molecular structures of 4a, 5a and 6 have been determined by single crystal X-ray analysis.
DA  - 1994
KW  - 1-Phospha-1
KW  - 3-butadiens
KW  - Cycloadditionen
KW  - Alkine
LA  - ger
IS  - 12
M2  - 1693
PY  - 1994
SN  - 0932-0776
SP  - 1693-1706
T2  - Zeitschrift für Naturforschung. B
TI  - Dipolare [3+2]-Cycloadditionen und [2+2]-Cycloadditionen von Carbonyl-aktivierten Alkinen an ([eta]5-C5Me5)(CO)2Fe-P=C(NMe2)2. Synthese und Struktur des 1-Phospha-1,3-butadiens ([eta]5-C5Me5)(CO)2Fe-P=C(E)-C(E)=C(NMe2)2(E = CO2Me)
UR  - https://nbn-resolving.org/urn:nbn:de:0070-bipr-6316
Y2  - 2024-11-22T03:25:44
ER  -