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Photochemical and thermal rearrangements of 4,4,6,6-tetramethyl-1-oxaspiro[2.3]hexan-5-one

✍ Scribed by N.J. Turro; D.R. Morton; E. Hedaya; M.E. Kent; P. D'Angelo; P. Schissel

Publisher
Elsevier Science
Year
1971
Tongue
French
Weight
197 KB
Volume
12
Category
Article
ISSN
0040-4039

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study ( < -30"C)1111. This is best evidenced by the upfield shift of protons H' (by 23Hz) and H5 (by 32Hz) on going from ( 3 ) to ( 5 ) , which simply reflects the increased availability of the lone pair for limited delocalization but is clearly inconsistent with the development of the diamagnetic r