Navigation

0 Hits

  • Previous / Next

You are using Science Of Synthesis as a Guest.
Please login to access the full content or check if you have access via
24.4.3.5.4.2.2 Method 2: Reaction between 1-(Vinylsulfanyl)alk-1-ynes and Carbonyl Metals

DOI: 10.1055/sos-SD-124-00316

Ulfkjær, A.; Pittelkow, M.Science of Synthesis Knowledge Updates, (20181200.

1-(Vinylsulfanyl)alk-1-yne 149 (see Scheme 106, Section 24.4.3.5.4.1.4 for synthesis) has been tested for its ability to act as a multifunctional ligand by reaction with metal carbonyls such as nonacarbonyldiiron(0), octacarbonyldicobalt(0), and bis(acetonitrile)decacarbonyltriosmium to give products 150 (Scheme 109).[‌28‌] Reaction with nonacarbonyldi­iron(0) reveals that 149 acts as a multifunctional ligand through six-electron donation by a sulfur atom (two electrons) and the alkyne group (four electrons). Reaction with octacarbonyldicobalt(0) and bis(acetonitrile)decacarbonyltriosmium only leads to four-electron donation through the alkyne group. All compounds maintain the Z configuration of the alkene throughout the reaction sequence.

Meeeee 888 Meeeeeee eeeeeee 8-(Meeeeeeeeeeee)eee-8-eeee eee Meeee Meeeeeeee[‌88‌]

Meeeeeeeeee 888

[Me(MM)eMe] [Me(MM)e] ee 888 Meeeeee Meeee (%) Mee
Me8(MM)8 Me8(MM)8 MMM 88 [‌88‌]
Me8(MM)8 Me8(MM)8 MM8Me8 88e [‌88‌]
Me8(MM)88(MMMe)8 Me8(MM)88 MM8Me8 88e [‌88‌]

e [Me(MM)e] eeee eeeeeeeeeee ee eee eeeeee eeeee.

Meeeeeeeeeee Meeeeeeee

(M)-8-[(8-Meeeeeeeeeeeeeeee)eeeeeeee]-8-(eeeeeeeeeeeeee)eeeeee–Meeeeeeeeeeeeeeeeeee Meeeeee 888 {[Me(MM)e] = Me8(MM)8}; Meeeeee Meeeeeeee:[‌88‌]

Me8(MM)8 (888 ee, 8.88 eeee) eee eeeee ee e eeee ee 888 (888 ee, 8.88 eeee) ee MM8Me8 (88 eM), eee eee eeeeeee eee eeeeeee eee 8 e. Mee eeeeeee eee eeeeeee eeeee eeeeeee eeeeeeee, eee eee eeeeeee eee eeeeeeee ee MMM (eeeeee/eeeeeee 8:8) ee eeee eee eeeee eeeeeeee ee e eeee-eeeee eeeee; eeeee: 888 ee (88%).

References


Cookie-Einstellungen