Synthesis of Metallacyclobutenes of Late Transition Metals via Nucleophilic Addition of Allenyl or Propargyl Complexes

Content Provider	Semantic Scholar
Author	Cheng, Yuan-Chung Chen, Yu-Kun Huang, Tsang-Miao Yu, Chao-Ining Lee, Gene-Hsiang Wang, Yu Chen, Jwu-Ting
Copyright Year	1998
Abstract	The regioselective addition of NEt3, PPh3, or pyridine to the central carbon of a cationic η3-allenyl/propargyl complex of platinum, {Pt(PPh3)2(η3-C3H3)}(BF4) (1), leads to the formation of the new cationic = NEt3 (2a), PPh3 (2b), C5H5N (2c)) via formation of a C−N or C−P bond, respectively. Complex 2c can transform into {cis-Pt(PPh3)2(Py)(η1-CHCCH2)}(BF4) (3). The reverse reaction has not been observed. It is suggested that nucleophilic addition of 1 likely involves external attack at the central carbon of the η3-allenyl/propargyl ligand. Protonation of 2b yields {Pt(PPh3)2[η3-CH2C(PPh3)CH2]}(BF4)2 (7). Addition of PPh3 to a labile η1-allenyliridium complex, (OC-6-42)-Ir(Cl)(PPh3)2(OTf)(CO)(η1-CHCCH2) (4), results in the The single-crystal X-ray structure of 5 has been determined.
Starting Page	2953
Ending Page	2957
Page Count	5
File Format	PDF HTM / HTML
DOI	10.1021/om9708642
Volume Number	17
Alternate Webpage(s)	http://quantum.ch.ntu.edu.tw/ycclab/wp-content/uploads/2015/01/Organometallics-1998-Cheng.pdf
Alternate Webpage(s)	https://doi.org/10.1021/om9708642
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article