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Excited-State Reactions of 1,2,4,5-Tetramethyl-3,5-cyclohexadiene-cis-1,2-dicarboxylic Anhydride

✍ Scribed by Dr. R. N. Warrener; J. B. Bremner


Publisher
John Wiley and Sons
Year
1966
Tongue
English
Weight
115 KB
Volume
5
Category
Article
ISSN
0044-8249

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Isolation of 3,4,5,6-Tetramethyl-1,2-dip
✍ Dr. Henner Straub 📂 Article 📅 1974 🏛 John Wiley and Sons 🌐 English ⚖ 248 KB 👁 1 views

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