Chemical Diversification of Sialic Acid Glycosides by Stereospecific, Chemoselective Deamination. Ji‐Ping Zhao, Lu‐jia Ding, Peng‐Cheng Wang, Ying Liu, Min‐Jun Huang, Xin‐Li Zhou, Ming Lu. A process according to claim 1, wherein the oleum has a sulfur trioxide concentration of 20 to 65%. ester or nitrile radicals, directly attached to ring carbon atoms, Amino or imino radicals substituted by hydrocarbon or substituted hydrocarbon radicals. In all cases the Ref. Scott E. Denmark, Wen-Tau T. Chang, K. N. Houk, and Peng Liu . DSC analysis for the nitration reaction to evaluate the safe reaction conditions. The nitration reaction of Example 1 was performed in a 1-liter reactor at 1/3 scale (somewhat shorter times were needed because of the larger specific cooling area) using ice-water cooling. If you do not receive an email within 10 minutes, your email address may not be registered, Preparative and Mechanistic Aspects of Electrophilic Nitration. The invention pertains to a process for preparing nitrated pyridine-2,6-diamines in which a pyridine-2,6-diamine is contacted with a mixture of nitric acid and sulfuric acid. Triazenes as a Stable Diazonium Source for Use in Functionalizing Carbon Nanotubes in Aqueous Suspensions. H. H. Licht et al., Novel Explosives: Dinitropyridines , Nit. 91-015456 03! H��W[o����� �IʒKn�RIĐ��k�@�5Ї�OA��E�@������̐�����0t���̹~�L�p�����>]dqӔ�����/�}��?�j�*�����aD����4�G�������ç8��O�"��E��,.�2>�zx��W���������*����E���?u7y�������F5��v��,���p��/�%O΅u�?�&m�q\�J��}�˙5�������Gqy�x^ʴ������eڞ�,���w�'�.O�.m�װmf{>�%�?܆�j������p6�mr�ض��C��� ��C�UiEB����j����^�*�ڭ&{0k@ ����]��6m�&����I��](�t�[paZY�4�ز����ºmӊ/�$���%���Ȧ��NA�����)��>� �ֹwN������3�wqM����D���-�Y��M�1 ��f���:�Մ�1&��!&`h,�P'�̭0��,.5��g� of the whole article in a thesis or dissertation. it in a third party non-RSC publication you must ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SIKKEMA, DOETZE JAKOB;REEL/FRAME:009226/0230, MAGELLAN SYSTEMS INTERNATIONAL LLC, MARYLAND, ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AKZO NOBEL N.V.;REEL/FRAME:013782/0266, E. I. Journal of Labelled Compounds and Radiopharmaceuticals. 2.1. 3,920,336. N. N. Makhova, G. A. Karpov, A. N. Mikhailyuk, A. E. Bova, L. I. Khmel'nitskii, S. S. Novikov. 4 (C-4) with oleum-resistant substituents. It is preferred to use not more than 2.1 moles of nitric acid per mole of DAP and to carry out the reaction at a temperature of less than 30° C., preferably between 15° C. and 25° C. If during treatment the nitrated product precipitates because the intensely acidic medium is diluted with water, it is recommended to keep the contact time between the reaction product in solution and the water as brief as possible (preferably less than five seconds), and maintain a low temperature during said contact (preferably less than 25° C.). Yield data other than for crude product are not given. The Synthesis of 2,3,5,6 Tetraaminopyridine , J. Heterocyclic Chem., 8 (Oct. 1971), pp. After another ten minutes of stirring with cooling, the somewhat viscous, dark red, clear reaction mixture was stirred into 7 kg of ice; the final temperature of the coagulation mixture was 1.5° C. The solids were filtered off, were washed three times with 1 l of water, and were dried for forty-eight hours at 50° C., 1 mbar. Synthesis of 14C-labelled compounds. Towards the end of the nitration a 3-liter three-necked flask equipped with a rapid stirrer, a dropping funnel, and a vacuum outlet was charged with 2.5 l of methanol, which was cooled to 10° C. by evacuation and boiling in vacuo. Stable N-acyl pyridinium and benzpyridinium salts as alkylating agents. Structure and reactivity. MAGELLAN SYSTEMS INTERNATIONAL LLC, MARYLAND, Free format text: Development of Chiral Bis-hydrazone Ligands for the Enantioselective Cross-Coupling Reactions of Aryldimethylsilanolates. @P���K *'K��Ӆ�٣?���u47����9��j\�u}x�l��F��p�`�9Ui�Xd��X�;ѡ��rc�$����ˣ�"�ͬ��Z�A�R��� ��|"J �>(ɰ�lV�q��ճ9����݃�� �540����9�L���݀!��Y�� ���:G_�<4�K�Y�#ے�m\����j0���� H+���ES�d9�T�� ����G�%7G� ��]ٌ�a�x���>*�4g� ��������e�6��y�IQ'w�Оd�U�����]��g�L�&������/Q���j�_N��$T�>��ҽ� pM���:M�-E���|t��/�Nq�WBE�}��0��ʡ\GN%3���q.W%"?���s�%Y� Y�|�">�즒��ѷ(�����]�e�ˣ�:���?w]��d �G�ީ��I�nM��p�`��A��ٛDy���f���w�i�}b(8����~����FZc-MAѝޤ�b2��3_M#ox��V�l� ���Wʟ���v������~=돁��nG��}q����5�� ��(����4�9cUTh ~eQl��\�/Z�|/����ш�3�. A process for preparing nitrated pyridine-2,6-diamines in which a pyridine-2,6-diamine is contacted with a mixture of nitric acid and sulfuric acid, wherein the sulfuric acid used is fuming sulfuric acid (oleum). 94-290874/36 (1994). The full text of this article hosted at iucr.org is unavailable due to technical difficulties. Assigned to MAGELLAN SYSTEMS INTERNATIONAL LLC, Assigned to E. I. R.L. In H. H. Licht et al., Int.