Abstract
By attaching bulky substituents at the bay region of di(spiroacridan)- substituted dihydrophenanthrene 1a, the prestrained C9-C10 bond in the dihydrophenanthrene (DHP) skeleton of 1c-1e is expanded from 1.634(2) to 1.649(3)-1.652(6) Å, which demonstrates the bond expansion through remote steric effects. Twisting deformation of the DHP skeleton is the key to transfer the steric bulkiness from the C4/C5 positions to cause the additional strain in the C9-C10 bond.
Original language | English |
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Pages (from-to) | 1194-1196 |
Number of pages | 3 |
Journal | Chemistry Letters |
Volume | 42 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2013 |
ASJC Scopus subject areas
- Chemistry(all)