Smethy!. -magnesium- “iodides 
as. first reaction product, which on iene with notes bis 9} 
into 1,4- diisopropenylbenzene (II); the glycols (il and Vv) originati 
- tetrahydro compounds of the terephthalic acid ester, immediately gay 
_ formed 1,4-di-isopropenyl-A**- SL ee (IV) and two. isomeri ce 
s mn ithe formula Gish. wh vs Pete Nee iO Oh aaa 
> 
peeirapien: 
‘truth, so should the Dewar Fecal’ sania to ‘Bauell atid Hani 
CioHis, which were very sensitive to ‘his element. It also could not ee ele 
whether : structural or stereo- “isomerism was. tea wine The. behaviour of the co 
AM. dihydrobenzene, the dispersion of which had an “exaltation of 20 0 per cen 
and Willstatter ”). ; ) 
CH, ce CH, 
HO-C-< C-OH 
a es 
3 
(I) --Diehysronyimehonethy ez 
CHs 
* 
JS — CH, | Bree 
| OH: C. eed eee C: om On Sek, 
! Med a ape ORT E 14-dihydrobenzene (IV) 1/4: Dissoprapenyl Akai ein 
. i? | (cannot be isolated). j PES Tawi 02 1 Me UNOS, Ce oR aaa 
| CH; Cth CH, CH, y 
| OH-C.CC DoH C:OH 0 
a _CHs ae aR ee GH eee eG 
a *. (V) 1,4-Di- [a-hydroxydimethomethyl]- -A'-tetrahydrobenzene (V1) 1 JDisoprop 
Te (cannot be isolated). Oe 
| Pay ; . sara Pe Rit fae : : oh ah Mahe Roe i 
1) Journ. Americ. chem. Soc. 41 (1919) 1676. — *) Berl. Berichte 45 (1912), 809, 146i 
aid 
