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Flashcards in Men of Ochem Deck (25)
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1
Q

Samuel Danishefsky

A

CU faculty, Wolf prize. Has his own diene.

2
Q

Friedrich August Kukule

A

proposed correct benzene structure in 1865. No Nobel, but his students won three of the first five in chemistry.

3
Q

Albert Ladenburg

A

Proposed prism structure for benzene. 1869.

4
Q

Erich Huckel

A

Huckel’s Rule. 4n+2

5
Q

Kurt Alder

A

Of Deils-Alder, won Nobel prize as a graduate student.

6
Q

Richard Willstatter

A

synthesized cyclooctatetraene, plant pigment nobel prize.

7
Q

Otto Diels

A

Won Nobel with Alder in 1950.

8
Q

Traugott Sandmeyer

A

Discovered Sandmeyer reaction in 1884. Indigo dye!

9
Q

Charles Freidel

A

Of F-C fame. French. He wanted to sythesize diamonds!

Crafts was American, boring.

10
Q

Jack Roberts

A

Discovered benzyne RXN. Cal Tech.

11
Q

EJ Corey

A

retrosynthetic analysis

12
Q

Linus Pauling

A

Two Nobel prizes, one for peace, one for chem. Clarified Kukele’s benzene structure with the idea of resonance.

13
Q

EWG

A

lowers LUMO

14
Q

EDG

A

Raises HOMO

15
Q

Heteroatoms in aromatic rings

A

varied bond length, less stable than benzene

16
Q

Charged Amines

A

Bam! Now they’re EWG, metadirectors.

17
Q

Free Amino Freidel-Crafts

A

NO!

18
Q

Kinetic Product

A

Endo

19
Q

Thermodynamic Product

A

Exo

20
Q

Prove molecular shape

A

X-ray crystal structure, HNMR (different degrees of deshielding), UV spec

21
Q

Boron?!

A

Three bonds, no lone pairs

22
Q

Triple Bonds in Aromaticity

A

Don’t count them!

23
Q

Activation energy

A

HOMO of diene to LUMO of dienophile

24
Q

Tom Katz

A

CU, synthesized prism benzene.

25
Q

Rate determining step in EAS

A

First step: electrophile attack