Follower readiness

On the other hand, /q can be calculated if s is known. If the porosity is assumed to be 0.65 (bonded phase), the following ready-to-use equation can be derived ... 

In the simplest form of the Abramov reaction, the phosphorus-containing reactant is hypophosphorous acid (phosphinic acid) or an ester thereof, and in the reactions between the acid and formaldehyde or benzaldehyde the initial product is the phosphinic acid 144 (R = H or Ph.). However, the reaction can proceed further to give the bis(l-hydroxyalkyl)phosphinic acid (145 R = H or Ph) the latter (R = Ph) reacts readily with yet more benzaldehyde to give its benzylidene derivative, 5-hydroxy-2,4,6-triphenyl-1,3,5-dioxaphosphorinane 5-oxide (146 R = Ph). When acted on by a second mole of cyclohexanone in the presence of acetyl chloride, (l-hydroxycyclohexyl)phosphinic acid (147) gives the novel phosphinic chloride 148, characterized as the free acid 149 following ready hydrolysis A reaction between a phosphinic acid (150) and a second (non-identical) carbonyl compound leads to an unsymmetrical phosphinic acid (151). Esters of symmetrical 1, r-dihydroxy-substituted phosphinic acids are preparable from hypophosphite esters, H2P(0)0R ". ... 

The commercially available product Dynastat powder for solution for injection 20 mg and 40 mg must be reconstituted before use. The following ready to administer parecoxib preparations are possible ... 

As stated above, ethers do not lend themselves to the ready formation of crystalline derivatives. The following however, are recommended. 

In the following pages an account is given of some of the more simple reactions which enzymes catalyse. The reactions have been selected partly because they are of particular interest to the organic chemist, and partly because they are capable of simple and ready demonstration in the laboratory. 

Now that we know something about EDTA s chemical properties, we are ready to evaluate its utility as a titrant for the analysis of metal ions. To do so we need to know the shape of a complexometric EDTA titration curve. In Section 9B we saw that an acid-base titration curve shows the change in pH following the addition of titrant. The analogous result for a titration with EDTA shows the change in pM, where M is the metal ion, as a function of the volume of EDTA. In this section we learn how to calculate the titration curve. We then show how to quickly sketch the titration curve using a minimum number of calculations. 

Synthesis. The first hiUy alkyl/aryl-substituted polymers were reported in 1980 via a condensation—polymeri2ation route. The method involves, first, the synthesis of organophosphine-containing alkyl or aryl substituents, followed by the ready oxidation of the phosphine to a phosphorane with leaving groups suitable for a 1,2-elimination reaction. This phosphorane is then thermally condensed to polymers in which all phosphoms atoms bear alkyl or aryl substituents. This condensation synthesis is depicted in Eigure 2 (5—7,64). 

Two modifications of the duidized-bed reactor technology have been developed. In the first, two gas-phase duidized-bed reactors coimected to one another have been used by Mobil Chemical Co. and Union Carbide to manufacture HDPE resins with broad MWD (74,75). In the second development, a combination of two different reactor types, a small slurry loop reactor followed by one or two gas-phase duidized-bed reactors (Sphetilene process), was used by Montedision to accommodate a Ziegler catalyst with a special particle morphology (76,77). This catalyst is able to produce PE resins in the form of dense spheres with a diameter of up to 4—5 mm such resins are ready for shipping without pelletization. 

AH discussion of the post-1965 era must begin with the Restatement (Second) of Torts, Section 402A. The person responsible for this section was Dean William Prosser, who became the reporter for American Law Institute s Restatement (Second) of Torts at a time when change was on the horizon in the field of products HabiUty. His initiative in drafting Section 402A provided the courts with a ready-made formulation for the adoption of strict tort HabiUty. Entitled "Special Liabihty of Seller of Product for Physical Harm to the User or Consumer," Section 402A reads as follows ... 

The conversion factors are presented for ready adaptation to computer readout and electronic data transmission. The factors are written as a number equal to or greater than one and less than 10, with six or fewer decimal places. The number is followed by E (for exponent), a plus or minus symbol, and two digits which indicate the power of 10 by which the number must be multiphed to obtain the correct value. Eor example ... 

Labile Chlorine Containing Monomers. Chlorine is introduced in the acryhc elastomer chain by analogy to polychloroprene (19). The monomers are characterized by the simultaneous presence of a double bond available for polymerization with acrylates and a chlorine atom ready to react easily during the vulcanization step. The general formula is as follows where R is a group that might enhance the reactivity of the double bond and/or of the vicinal chlorine atom. 

PSSR Completion Summary The following issues have been resolved and the undersigned believe the process/facility is ready for startup. ... 

Startup description. When the unit is prepared to start, the Ready to Start lamp will be lit. With local control, operating one of the following push buttons will initiate a start ... 

At this point, it would be reasonable to consider— for planning purposes— the following broad parameters 120 staff-months, spread among a team including corporate, division, and facility personnel over an 18-month period, at the end of which we can expect to have a PSM system that has been carefully thought out and fully tested, ready for implementation throughout the company. 

Benzylic halides resemble allylic halides in the readiness with which they fonn caibocations. On comparing the rate of SnI hydrolysis in aqueous acetone of the following two tertiary chlorides, we find that the benzylic chloride reacts over 600 times faster than does rerr-butyl chloride. 

The coordinator must assure that the emergency equipment is always in readiness. Siting tlie control center and locating its equipment is also tlie coordinator s responsibility. There should be both a imiin control center and an alternate, in carefully chosen locations. The following items should be present at tlie control center ... 

I2CI6 is readily made as a bright-yellow solid by reaction of I2 with an excess of liquid chlorine at —80° followed by the low-temperature evaporation of the CI2 care must be taken with this latter operation, however, because of the very ready dissociation of bClg into ICl and CI2. 

No comparable study of the hydration of the C=N bond has been made although its properties lie between those of the C=C and C=0 bonds. The hydration of SchifiFbases, such as benzylideneaniline (1), to cations of Dimroth bases, such as 2, is well-known, but attempts to follow this reaction kinetically have been frustrated by the ready breakdown of the neutral species, e.g. 2, to benzaldehyde and aniline. About ten years ago, workers in this Department were surprised to find the C=N bond in many pteridines is capable of hydration, analogous to the reaction 1 f 2. The surprise stemmed principally... 

Oxidation of ecgonine (2) by means of chromium trioxide was found to afford a keto acid (3). This was formulated as shown based on the fact that the compound undergoes ready themnal decarboxylation to tropinone (4)The latter had been obtained earlier from degradative studies in connection with the structural determination of atropine (5) and its structure established independently. Confirmation for the structure came from the finding that carbonation of the enolate of tropinone does in fact lead back to ecgonine. Reduction, esterification with methanol followed by benzoylation then affords cocaine. 

Following the backflush of the primary column and separation of the analytes on the second column, the system can then be returned to its original prefractionation position, ready for the next sample injection. 

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