Potassium hydroxide . See

Tetrahydrofuran is purified by distillation from lithium aluminium hydride after 48 hours of refluxing over potassium hydroxide (see Org. Syn., 46, 105 (1966)). 

Bromoform, Potassium hydroxide See Bromoform Cyclic polyethylene oxides), etc. 

Bromo-2,5,5-trimethylcyclopentanone, Potassium hydroxide See 2-Bromo-2,5,5-trimethylcyclopentanone Potassium hydroxide, etc. 

Nitrobenzene, Potassium hydroxide See Nitrobenzene Alkali (reference 4)... 

Benzoxazines and 1,2-benzothiazines are rarely encountered except as carbonyl derivatives or as 5-oxides respectively. However, an interesting representation of the 2,1-benzothiazine system is provided by the zwitterion (9) which is formed by successive treatment of the 2-aminostyrene (8) with iV-chlorosuccinimide and potassium hydroxide (see Section 2.27.3.1.1. ii). On protonation it gives the salt (10). 

Ethyl hydrogen malonate may be prepared from diethyl malonate by controlled hydrolysis with potassium hydroxide (see also Expt 5.147, Note (1)). 

See l,4-Bis(l,2-dibromoethyl)benzene Potassium hydroxide See other ALKYNES... 

Nitrobenzoic acid Potassium hydroxide 4-Nitrophenol Potassium hydroxide 2-Nitrophenol Potassium hydroxide See DEFLAGRATION INCIDENTS... 

Potassium Hydroxide TS, Alcoholic Use 0.5 N Alcoholic Potassium Hydroxide (see Volumetric Solutions in this section). 

POTASSIUM HYDROXIDE see PLJSOO POTASSIUM HYDROXIDE, dt % solid, flake, bead, or granular pOl) see PLJSOO... 

Some 95% of the potassium chloride is consumed directly in fertilizer applications. Most of the rest is used to make potassium hydroxide (see Chap. 

Similar results were obtained using the 4-tert-butylcalix[6]arene derivative 12 as a catalyst in the presence of solid potassium hydroxide (see table below). ... 

See Caesimn trioxide, also Fluorine Potassium hydroxide See related metal peroxides See other METAL oxides... 

Sulfonyl Azides. Alkyl- and arylmagnesium halides,305 306 as well as alkyl-307, aryl- (see Eq. 70),308-312 and heteroaryllithium313 reagents add to sulfonyl azides to give triazene salts which may be reduced to amines 305 310 312 Gr converted into azides. The latter reaction has been accomplished by an aqueous workup with the highly hindered 2,6-dimesitylphenyl azide,314 whereas quenching with aqueous potassium hydroxide (see Eq. 72)305,315 sodium bicarbonate,313 or sodium pyrophosphate305,316 (see Eqs. 67 and 74) is necessary with other arenesulfonyl azide adducts. Thermolysis of the dry triazene salts also leads to azides,307,308 but because of the hazards involved, this procedure is not recommended. 

The most important catalyst used industrially for the synthesis of high MW polyethers is potassium hydroxide (KOH) [1-14, 17, 49-53]. The second catalyst group is the group of dimetallic catalysts based on a nonstoichiometric complex of Zn3[Co(CN)6l3 ZnCl2 (DMC) with various ligands. DMC catalysts are the highest performance catalysts known at this time for PO polymerisation, being around 1000 times more active than potassium hydroxide (see Chapter 4.9). 

Some 2,4,6-triaryl-l,3,5-triazincs 1 can be converted to triaryl-substituted imidazoles 2 by reduction with nascent hydrogen generated from zinc in acetic acid or zinc in potassium hydroxide (see Houben-Weyl, Vol. E8c, p 93). In this reaction one nitrogen is lost in the form of ammonia. The reaction times required arc between 20 minutes and two hours in hot acetic acid15 or refluxing aqueous potassium hydroxide 16 the yields are reported to be nearly quantitative.13 17... 

Oil soap Soft soap made of olive oil and potassium hydroxide. See 605. 

The relatively high acidity of bridgehead hydrogen in the polyfluoro-bicyclo[2,2,l]heptanes (11), (16), and (19), coupled with resistance to loss of -fluorine as fluoride ion shown by derived carbanions [c.. (11) and (16) can be recovered after treatment with 18M-KOH at 100 C for 8h], has been utilized in the synthesis of a range of polyfluorobicyclo[2,2,l]hept-l-yl entities, including some of the first fully authentic bridgehead organometallics, simply with the aid of aqueous potassium hydroxide (see Scheme 16). ... 

Dissolve the residue at room temperature in 1 to 1-5 ml of 5N potassium hydroxide (see N ote below) and add a piece of ice (about 40 g). Then add 7 to 8 ml of iodine solution (prepared by dissolving 12 7 g of potassium iodide in 10 ml of water, adding and dissolving 6-35 g of iodine and finally adding 12 ml of 5N potassium hydroxide before diluting to 100 ml with water). Add concentrated hydrochloric acid from a burette, stirring the solution, to complete precipitation. If sufficient iodine has been added, the precipitate as well as the supernatant liquid... 

With few exceptions, such as Na2C03, K2CO3 molten electrolytes, liquid electrol3des are only of relevance for low-temperatiure systems. Classical systems are based on phosphoric acid or potassium hydroxide (see Tables 7.5 and 7.6, page 496) [671]. 

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