Alkyl Cyanates. VII. Mass Spectra of Cyanates.

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Two-dimensional copper thio- and seleno-cyanates.

Based on density-functional theory calculations we identify two-dimensional (2D) forms of copper thio-cyanate (CuSCN) and copper seleno-cyanate (CuSeCN). CuSCN is known to crystallize in two three-dimensional polymorphs, the beta wurtzite and the alpha structure, both with tetrahedral bonding networks. Here we find that CuSCN and CuSeCN may be stabilized also in monolayer geometries with SCN or...

متن کامل

Diversity-oriented heterocyclic synthesis using divergent reactivity of N-substituted iso(thio)cyanates.

Carbon-substituted isocyanates and isothiocyanates are common building blocks in organic synthesis. In contrast, synthetic uses of N-substituted isocyanates and isothiocyanates are severely underdeveloped: few have been reported and their reactivity had not been compared. Herein, we compare the reactivity of blocked (masked) N-isocyanate and N-isothiocyanate precursors in cascade reactions. Div...

متن کامل

Regioselective (thio)carbamoylation of 2,7-di-tert-butylpyrene at the 1-position with iso(thio)cyanates

It has been found that 2,7-di-tert-butylpyrene reacts with aliphatic iso(thio)cyanates in the presence of trifluoromethanesulfonic acid to exclusively afford the corresponding 1-substituted (thio)amides in high yields. For aromatic iso(thio)cyanates the reaction is less regioselective, although substitution at the 1-position prevails. For ethoxycarbonyl isothiocyanate, apart from the 1-substitu...

متن کامل

Formation of cyanates in low-valent uranium chemistry: a synergistic experimental/theoretical study.

Computational studies on the reductive activation of a mixture of CO and NO by the U(iii) complex [U(η-C8H6{Si(i)Pr3-1,4}2)(η-Cp*)], which affords a mixture of [U(η-C8H6{Si(i)Pr3-1,4}2)(η-Cp*)]2(μ-OCN)21 and [U(η-C8H6{Si(i)Pr3-1,4}2)(η-Cp*)]2(μ-O) 2, show that the reaction proceeds via an initial attack of CO on a μ-η(2):η(2) coordinated NO, side-on bridged between two uranium centres. This lea...

متن کامل

POSITIVE AND NEGATIVE ION MASS SPECTRA OF RING - SUBSTITUTED NITROBENZENES

The 70 ev positive and negative ion mass spectra of ring-substituted nitrobenzenes were studied. The influence of the substituent group on the fragmentation modes of the molecular ions is discussed. The effect of pressure in the formation of negative ions was also studied. As expected, the ratio of fragment ions to negative molecular ions decreased with increasing pressure in ion source.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Acta Chemica Scandinavica

سال: 1966

ISSN: 0904-213X

DOI: 10.3891/acta.chem.scand.20-2107