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Organic Reactions Volume 4 - Sciencemadness Dot Org

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Addends<br />

l,4^Dihydronaphihalene<br />

(Cont'd)<br />

Tetraphenylcyclopentadienone<br />

2,b-Endomethylene-A 3 -<br />

tetrahydrobenzaldehyde<br />

Cyclopentadiene<br />

Ethylene<br />

Butadiene<br />

Cyclopentadiene<br />

2,3-Dimethylbutadiene<br />

TABLE VIII—Continued<br />

DIELS-ALDER ADDITIONS WITH ALLYL, VINYL, AND RELATED COMPOUNDS<br />

CeHg<br />

Products<br />

HBC «fo=o| I I<br />

CgHs<br />

lS^CHO<br />

Cyelohexene<br />

3,6-Methanocy clohexene-1<br />

1,2-Dimethylcy clohexene-1<br />

Ratio of<br />

Diene<br />

to Dienopnile<br />

0.67<br />

2.8<br />

—<br />

—<br />

—<br />

Solvent<br />

Xylene<br />

None<br />

None<br />

None<br />

None<br />

Temperature,<br />

0 C<br />

230-240t.<br />

170-175t.<br />

200t,<br />

190-200t.<br />

200t.<br />

Time,<br />

hours<br />

8<br />

8<br />

17<br />

23<br />

21<br />

B.P. or<br />

M.P.<br />

155-156<br />

142-143/<br />

18 mm.<br />

82.6-83.6/<br />

758 mm.<br />

44r-46<br />

137.6-138.2/<br />

760 mm.<br />

Yield,<br />

%<br />

70<br />

18<br />

74<br />

50<br />

References<br />

*<br />

42<br />

106<br />

41<br />

41<br />

41<br />

O<br />

H-I<br />

Q<br />

><br />

O<br />

H<br />

M<br />

O<br />

W

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