## Abstract The title compound **3f** is a novel isolable 1,10โanthraquinone which is stabilized only by alkyl groups. Despite of the shielding of the __meso__ position **3f** reacts very fast with water and oxygen to give 3โ__tert__โbutylโ1โhydroxyโ5,8โdimethylโ9,10โanthraquinone (**4f**).
Synthesis of the diuretic 8-chloroalloxazine-5,10-dioxide
โ Scribed by H. G. Petering; G. J. van Giessen
- Publisher
- John Wiley and Sons
- Year
- 1963
- Tongue
- English
- Weight
- 107 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0022-3549
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โฆ Synopsis
In the preparation of the higher homologs, a slight excess of cyclopropylamine was used. Distillation of the resultant products of reduction was uncomplicated.
N-1sopropylcyclopropylamine.-C yclopropylamine (28.5 Gm.. 0.5 mole) and 31.8 Gm. (0.5 mole) of acetone were mixed and allowed to stand for 1 hour, then hydrogenated under 2-3 atm. pressure in the presence of 1.0 Gm. of platinum oxide. After uptake of hydrogen was complete (6 hours), the mixture was allowed to stand until the REFERENCES
๐ SIMILAR VOLUMES
Condensation of aldehydes with pyrrole in the presence of acid catalyst gave the mixture of dipyrromethanes and tripyrromethanes. The major product was switched from dipyrromethanes to tripyrromethanes according to the sequence of adding the reactants and catalyst. Higher oligomers such as tetrapyrr
## Abstract The synthesis of 5,5,10,10โtetramethylโ1โoxacyclotridecanโ6,7,8,9โtetrone (12) was achieved via a multistep procedure involving an oxidation known as the Rubottom reaction. The key intermediates were the dialdehyde (25), the diacid (33), the cyclic diketone (39) and the bis(silyl enol e