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New Route to α‐[(1 E , 3 E )‐dienyl]allenes via Butadiene‐tricarbonyliron Complexes
Author(s) -
Nunn Kurt,
Mosset Paul,
Grée René,
Saalfrank Rolf W.,
Peters Karl,
von Schnering Hans Georg
Publication year - 1992
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199202241
Subject(s) - chemistry , propargyl , yield (engineering) , medicinal chemistry , 1,3 butadiene , stereochemistry , organic chemistry , catalysis , physics , thermodynamics
Complexes of propargyl carbonates 1 react with organocopper(I) compounds stereo selectively to yield the α‐(allenylbutadiene)tricarbonyliron complexes 2 . Decomplexation with eerie ammonium nitrate furnishes the α‐[(l E ,3 E )‐dienyl]allenes 3 rapidly and in high yields. R 1 Ph, t Bu, SiMe 3 ; R 2 Et; E Co 2 Me.