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 Method 7: Bis(isopropoxy)titanium(IV)–Propargyl or –Allenyl Complexes by Reaction of Low-Valent Titanium Complexes with Propargyl Halides, Acetates, ­Carbonates, Phosphates, or Sulfonates

DOI: 10.1055/sos-SD-002-00576

Mikami, K.; Matsumoto, Y.; Shiono, T.Science of Synthesis, (20032527.

The divalent titanium complexes prepared from [Ti(OiPr)4] or [TiCl(OiPr)3] and 2 equivalents of isopropylmagnesium bromide with propargyl alcohol derivatives give titaniumpropargyl complexes 146 or titaniumallenyl complexes 147 (Scheme 74).[‌282‌] This method is practical for the preparation of a variety of propargyl- or allenyltitanium complexes. Like allyltitanium complex 144 (Scheme 71, Section, complexes 148 prepared from 1-(alk-1-ynyl)cyclopropyl carbonates react with aldehydes at the less-substituted carbon (Scheme 74).[‌278‌]

Meeeee 88 Meeeeeeeeee eee Meeeeeeee ee Meeeeeee(MM)Meeeeeeee eee Meeeeee ­Meeeeeeee[‌888‌,‌888‌]