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Cleavage of Organic Nitrites

The photochemical cleavage of organic nitrites 224), also known as Barton reaction, has been widely utilized in the steroid field. The mechanistic sequence as described in (2.14) consists of  [Pg.17]

The reaction has been used in the synthesis of cortisone oxime 2251 (2.15) and P-amyrene 226). [Pg.18]


Thiol-Dependent Cleavage of Organic Nitrates and Nitrites 9.2.3.4. Hemoprotein-Dependent Reductive Cleavage of Organic Nitrates and Nitrites... [Pg.552]

Thiol-Dependent Cleavage of Organic Nitrates and Nitrites... [Pg.561]

Photochemical elimination reactions include all those photoinduced reactions resulting in the loss of one or more fragments from the excited molecule. Loss of carbon monoxide from type I or a-cleavage of carbonyl compounds has been previously considered in Chapter 3. Other types of photoeliminations, to be discussed here, include loss of molecular nitrogen from azo, diazo, and azido compounds, loss of nitric oxide from organic nitrites, and loss of sulfur dioxide and other miscellaneous species. [Pg.548]

Two major pathways are recognized to be of great pharmacological significance in the nonhydrolytic cleavage of nitrates, namely the thiol-dependent pathway and the hemoprotein-dependent pathway. A thiol-dependent pathway is also apparent for organic nitrites [5][30][31]. Before discussing... [Pg.561]

Fig (9) Methyl dihydroabietate (64b) has been converted to compound (68). The standard organic reactions have been utilized for its conversion to nitrite (72) which on irradiation followed by oxidation yields lactone (74). Cleavage of lactone ring followed by hydrogenation and esterification produced (76) which was converted to (77) by Friedel-Crafts acylation and Bayer-Villiger oxidation. This yields psiferic acid (1) tty hydrolysis. [Pg.187]


See other pages where Cleavage of Organic Nitrites is mentioned: [Pg.24]    [Pg.17]    [Pg.24]    [Pg.17]    [Pg.182]    [Pg.343]    [Pg.108]    [Pg.103]    [Pg.565]    [Pg.155]    [Pg.86]    [Pg.174]    [Pg.208]    [Pg.624]    [Pg.124]    [Pg.301]    [Pg.156]    [Pg.2092]    [Pg.143]    [Pg.322]    [Pg.9]    [Pg.114]    [Pg.9]    [Pg.7]   


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Organic nitrite

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