3434 ( WH = 1 .5) cm-I (GC); T(CC14) 8.65 (t-Bu), 3.88 (Hz), 4.80 (H4

(H4), 6.50 (H5a), 7.42 (H5,,); J = 19.3 (5a,5b), 5.5. (4,5a), and 2.0 hertz (4,5b); H, is a singlet. Nitrogen. (7 ml/min, STP) was passed through 9 (h...
0 downloads 0 Views 389KB Size
3434 Table I. Spectral Data I-

Compd 4 5ad 6ad 7d 10 lld 12d

Solvent

Xrnsx,

mp

log e

EtOH bCSH18 Vapor MeOHe

217 21@ 209 203

3.87 3.86

i-CsHi8'

193

MeOHh i-CsHish MeOHj i-CsH1sk MeOH2 i-CsHism

-

Ultraviolet"

Amax,

210 200 202 197 201 193

mp

log e 2.36 2.43

3.88

395 390 385 231

4.12

226

3.80

,

..

H2

Ha

HI

3.50

Nm,b T H5 t-Bu

5.07

8.83

.cm-lb

k , 1. mole-lsec-l (dimerization)

1708

2 . 4 X 10-'(25')

UC-O,

Other J3.6

1.7Hz

... 3.80

3.35 7.12 ( W E= 1 . 1) ( W H= 1 . 5 )

...

i

375

I

4.71 3.94 4.14 3.73 3.88

cU.380

>1.9 4.04 4.00 4.00 4.07 4 . 3 7 4.02

231 223 233 225

...

3.309

...

...

...

... ...

6 . 6 2 7.28

T

4.13 (doublet) 1700

T

6.88 (doublet)

8.78Jz,a=l.OHz 9.00 8.82 J z 1 4 ~Hz 1

1765 16959 17659

102 ( -20")

1710 1790 1698

, , ,A values reliable to 1 3 mp due to broadness of bands. In CCh. Broad band