Z-Selective (Cross-)Dimerization of Terminal Alkynes Catalyzed by an Iron Complex.
Efficient iron-catalyzed homocoupling of terminal alkynes and cross-dimerization of aryl acetylenes with trimethylsilylacetylene is reported. The complex [Fe(H)(BH4 )(iPr-PNP)] (1) catalyzed the (cross-)dimerization of alkynes at room temperature, with no need for a base or other additives, to give the corresponding dimerized products with Z selectivity in excellent yields (79-99 %).
Department of Organic Chemistry, Weizmann Institute of Science, 76100, Rehovot, Israel.
Orestes
O
Rivada-Wheelaghan
Department of Organic Chemistry, Weizmann Institute of Science, 76100, Rehovot, Israel.
Subrata
S
Chakraborty
Chemical Research Support, Weizmann Institute of Science, 71600, Rehovot, Israel.
Linda J W
0000-0002-7861-9247
LJ
Shimon
Department of Organic Chemistry, Weizmann Institute of Science, 76100, Rehovot, Israel.
Yehoshoa
Y
Ben-David
Department of Organic Chemistry, Weizmann Institute of Science, 76100, Rehovot, Israel. david.milstein@weizmann.ac.il.
David
0000-0002-2320-0262
D
Milstein
C−C coupling; homogeneous catalysis; hydroalkynylation; iron; pincer complexes