Rosette

8 Whitesides, G. M., Simanek, E. E., Mathias, J. R, et al., Noncovalent synthesis - using physical-organic chemistry to make aggregates , Acc. Chem. Res. 1995, 28, 37-44. 

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ROSE process Roses Rosette Rose water Rosin... 

Fig. 7. Formation of a supramolecular aggregate composed of a compound containing nine melamine rings (the three-layered nonamelamine derivative A) and nine molecules of neohexylisocyanurate (B). Of the 16 possible conformers that can result, two are shown The first has the nine molecules of B arranged in three rosettes of three molecules each, stacked atop each other in the second, the rosettes are staggered with respect to each other such that the rosettes in the first and third layers of A are aligned with each other, but not with the rosette in the second layer. The supramolecular assembly is stabilized...

J. L. Rosette, "Development of an Index For Rating the Effectiveness of Tamper-Evident Packaging Eeatures," Masters Thesis, California Coast University, Santa Ana, Calif., 1985. 

J. L. Rosette, Improving Tamper-Evident Packaging Technomic Publishing Co., Inc., Lancaster, Pa., 1992. 

J. L. Rosette, Product Tampering Detection Eorensic Packaging Concepts, Inc., Atianta, Ga., 1993. 

J. Rosette, Product TamperingA.s ItyTffects Consumers andEaw Enforcement, EBI Law Enforcement Bulletin, Sept. 1992. 

The latter on hydrolysis and decarboxylation yielded womicotyrine (II, above], rosettes of flattened needles, m.p. 98-9°, picrate, m.p. 203-4° dec.), in good agreement with the data of previous authors. 

MethyHsopelletierine, CgHj,ON. This base, isolated by Piccinini under the name fsomethylpelletierinc, was re-examined by K. Hess ei al. It is an oily alkaline liquid, b.p. 114-7°/26 mm., miscible with water and optically inactive. The hydrochloride has m.p. 156° hydrobromlde, m.p. 151-2° the picrate melts at 158° and the aurichloride forms orange-yellow rosettes, m.p. 115-7°. The base can be resolved into d- and... 

HjO) and Bj. H2SO4.4HjO, m.p. 203-4°, [a] ° + 120° the acid sulphate, B. HjSO, occurs in yellow prismatic needles, m.p. 246-8° (corr., dec.), [a]n + 113-1° (HjO) the hydrochloride forms yellow, pentagonal plates, m.p. 286° (corr., dec.), and shows a purple fluorescence in solution in alcohol the picrate separates from alcohol in rosettes of reddish-orange needles, m.p. 194-5° (cort.). Dilute solutions of the salts are yellow and show a marked blue fluorescence. Alstonine behaves as a monoacidic base, contains one methoxyl but no methylimino group, and, unlike echitamine, does not give indole colour reactions. 

Macralstonidine, C44Hjo03N4, forms colourless platelets from dry alcohol, becomes yellow on exposure to light and vitreous on heating, with final decomposition at about 270° it has [a]n + 174-5° (C3H3). The hydrochloride, B. 2HC1, forms rosettes of colourless needles, m.p. 326° (dec.), [a]D + 136-5° (HjO). The alkaloid contains two methylimino groups but no methoxyl group. 

The experiments were performed on two sets of beams with the beam axis at 0 and 90°, respectively, to the fiber direction of the odd-numbered layers. The beams were 1-in (25.4-mm) wide,. 12-in (3-mm) thick, and of 6-in (152-mm) span. Strain rosettes were located on the upper and lower beam surfaces so that the middle-surface strains and curvatures can be calculated from simultaneous solution of... 

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