New PDF release: A Further Note on the Age Index of a Population

By LaBlanc T. J., Pearl R.

Show description

Read Online or Download A Further Note on the Age Index of a Population PDF

Best nonfiction_1 books

Fluoroplastics by Drobney, J. G. PDF

Fluoropolymers have been chanced on by chance via Plunkett in 1938. He was once engaged on freon and by chance polymerised tetrafluoroethylene. the end result was once polytetrafluoroethylene (PTFE), quite often referred to as Teflon. PTFE is inert to nearly all chemical substances and is taken into account to be the main slippery fabric in lifestyles – it has the bottom coefficient of friction of any recognized reliable fabric.

Plunkett's Energy Industry Almanac by Plunkett J.W. PDF

The power is boiling over with alterations. Deregulation, new possibilities in overseas fields and markets and environmental demanding situations are dashing jointly head-on to form the power and utilities enterprise of the longer term. super deep offshore wells within the Gulf of Mexico and offshore of West Africa are being drilled at gigantic rate.

Extra info for A Further Note on the Age Index of a Population

Example text

P. 164-165° [31], 154° [174]; 1 HNMRPILIRPI]. wt. 70 Synthesis -Refer to: [627, 1013] (Japanese patents). p. and Spectra (NA). wt. 24 Syntheses -Obtained by hydrolysis of 4-acetamido-2-hydroxybenzophenone, *with boiling 5 N hydrochloric acid [658]; *with refluxing 48% hydrobromic acid [1307]. -Preparation by hydrolysis of 4-benzamido-2-hydroxybenzophenone (SM) with concentrated hydrochloric acid in refluxing acetic acid for 16 h (61%). p. 155°) [174]. -Also refer to: [1135]. p. 127-128° [1307], 125° [174, 658]; Spectra (NA).

22 Synthesis -Preparation by reaction of gallic acid with pyrocatechol in chlorobenzene in the presence of methanesulfonic acid for 6 h between 65 to 75° (90%) or by using boron trifluorideetherate instead of methanesulfonic acid as catalyst (10%). -Refer to: Chem. , 108, 204327v (1988). p. and Spectra (NA). 5 h (65%) [507]; *in the presence of zinc chloride and a mixture of polyphosphoric acid/85% phosphoric acid (60:40) at 27°. Then, during 2 h, phosphorous trichloride was added between 27 to 37° and the mixture heated at 60° for 16 h [1302].

P. 84-85° [693]; Spectra (NA). Phenyl(3,5,6-trifluoro-2-hydroxy-4-methoxyphenyl)methanone [32541-21-2] C14H9F3O3 moLwt. 22 Synthesis -Preparation by partial demethylation of 2,4-dimethoxy3,5,6-trifluorobenzophenone in methylene chloride in the presence of aluminium chloride at 20° for 3-6 h (94%) [839]. p. 56-58° [839]; 1 H NMR [839], IR [839], UV [839]. wt. 14 -Preparation by saponification of 2-(benzoyloxy)-6-bromo5-methoxy-4-nitrobenzophenone (SM) with potassium hydroxide in ethanol (71%). SM was obtained by oxidation of 4-bromo-5-methoxy-6-nitro-2,3-diphenylbenzofuran with chromium trioxide in boiling acetic acid for 30 min [574].

Download PDF sample

A Further Note on the Age Index of a Population by LaBlanc T. J., Pearl R.

by Anthony

Rated 4.56 of 5 – based on 39 votes