Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Distortion and Interaction Energies of Transition States for Cycloadditions of 5-E with Furans.a
| furan | regioisomer | ΔE‡ | ΔEdist‡ | ΔEint‡ |
|---|---|---|---|---|
 |
syn | 5.4 | 11.3 | −5.9 |
| anti | 6.3 | 14.6 | −8.3 | |
 |
syn | 1.9 | 13.3 | −11.3 |
| anti | 7.8 | 15.6 | −7.9 | |
 |
syn | 4.6 | 12.1 | −7.4 |
| anti | 3.9 | 12.3 | −8.4 | |
 |
syn | 4.4b | 15.7 | −11.3 |
| anti | 4.7 | 10.4 | −5.7 |
Electronic energies in kcal/mol.
ΔE‡ predicts syn, but ΔH‡ and ΔG‡ favor anti.
